Chemistry › Thermochemistry
Thermochemistry Questions
307 questions across 11 subtopics — with step-by-step solutions.
Adiabatic Process/Polytropic(27)
- Given,Enthalpy change whenmole of, a stron... | Chemistry | TestHub
- In a constant volume calorimeter, 3.5 g of... | Chemistry | TestHub
- Which chemical change among the following... | Chemistry | TestHub
- The standard molar heat of formation of et... | Chemistry | TestHub
- The standard enthalpy of formation of gase... | Chemistry | TestHub
- If heat of dissociation ofis, the,for the... | Chemistry | TestHub
- The heats of combustion ofcarbon and hydro... | Chemistry | TestHub
- Calculatefor chloride ion from the followi... | Chemistry | TestHub
- The lattice energy of solid NaCl is 180 kc... | Chemistry | TestHub
- When one mole of zinc dust and one mole of... | Chemistry | TestHub
- The heat of neutralisation of a strong bas... | Chemistry | TestHub
- The enthalpy of neutralisation of NH4OH an... | Chemistry | TestHub
- Substancecan undergo decomposition to form... | Chemistry | TestHub
- If Bond energies ofbonds are 83 Kcal, 140... | Chemistry | TestHub
- Thebond energy is ifkJ/mol;kJ/mol andkJ/mol | Chemistry | TestHub
- Combustion of glucose takes place accordin... | Chemistry | TestHub
- Calculate heat of atomization of furan in... | Chemistry | TestHub
- What is the true regarding complete combus... | Chemistry | TestHub
- The combustion of benzenegivesand. Given t... | Chemistry | TestHub
- If enthalpy of hydrogenation ofintoisand r... | Chemistry | TestHub
- Heat of combustion ofisand that ofon combu... | Chemistry | TestHub
- The standard enthalpy of formation of NH3i... | Chemistry | TestHub
- The enthalpy of vaporization of liquid wat... | Chemistry | TestHub
- Given,What is the magnitude of standard en... | Chemistry | TestHub
- Calculate the heat produced (in) whenofis... | Chemistry | TestHub
- Silanes are silicon hydrides of general fo... | Chemistry | TestHub
- 2 moles of solid benzoic acid undergoes co... | Chemistry | TestHub
Bond Enthalpy(15)
- Find the bond enthalpy (in kJ/mol) of one... | Chemistry | TestHub
- The enthalpy of combustion of methane gas... | Chemistry | TestHub
- For chemical reactionC(s)graphite + 1/2CO2... | Chemistry | TestHub
- Find bond enthalpy of (in ) using the foll... | Chemistry | TestHub
- For the reaction: N₂H₄(g) → N₂H₂(g) + H₂(g... | Chemistry | TestHub
- The enthalpy change at 298 K for decomposi... | Chemistry | TestHub
- The enthalpy changes at 298 K in successiv... | Chemistry | TestHub
- Find (\mathrm{N}-\mathrm{N}) bond enthalpy... | Chemistry | TestHub
- White phosphorus is a tetra-atomic solid \... | Chemistry | TestHub
- Given the following data: Enthalpy of subl... | Chemistry | TestHub
- Consider the reaction: The signs of and fo... | Chemistry | TestHub
- The enthalpy of combustion of acetylene is... | Chemistry | TestHub
- Given the data below :/mole /mole /mole /m... | Chemistry | TestHub
- The standard enthalpy of atomisation of \m... | Chemistry | TestHub
- The reaction \mathrm{CH}_{4}(\mathrm{~g})+... | Chemistry | TestHub
Born Haber Cycle(8)
- Calculate the magnitude of proton affinity... | Chemistry | TestHub
- Given that (i) Heat of solution for is (ii... | Chemistry | TestHub
- From the given data regarding enthalpy cha... | Chemistry | TestHub
- Number of compounds having MORE magnitude... | Chemistry | TestHub
- For an ionic solid \mathrm{MX}_{2} , where... | Chemistry | TestHub
- Consider the following Born-Haber's cycle... | Chemistry | TestHub
- Carefully observe the given diagrams which... | Chemistry | TestHub
- Value of "x" is \_\_\_\_ . (in \mathrm{kJ}... | Chemistry | TestHub
Enthalpy of Combustion(32)
- In a constant volume calorimeter, of a gas... | Chemistry | TestHub
- coal is burnt in a bomb calorimeter in exc... | Chemistry | TestHub
- The difference in \Delta \mathrm{H} and \D... | Chemistry | TestHub
- What is the heat of combustion of xylose,... | Chemistry | TestHub
- How much heat (in MJ) is evolved per day ?... | Chemistry | TestHub
- If the safe level of CO in the atmosphere... | Chemistry | TestHub
- The heat of combustion of methane at const... | Chemistry | TestHub
- When one mole of \mathrm{C}_{6} \mathrm{H}... | Chemistry | TestHub
- Sabu should rescue Chacha Chaudhary within... | Chemistry | TestHub
- The heat of combustion of ethanol in a bom... | Chemistry | TestHub
- The heat of combustion of methane at const... | Chemistry | TestHub
- Calculate enthalpy of combustion of \mathr... | Chemistry | TestHub
- Heat of combustion of \mathrm{CH}_{4}, \ma... | Chemistry | TestHub
- Given the data below :What should be the b... | Chemistry | TestHub
- Calculate the enthalpy of combustion of be... | Chemistry | TestHub
- Calculate the heat produced (in Mcal) when... | Chemistry | TestHub
- Hydrazine, a component of rocket fuel, und... | Chemistry | TestHub
- The heat of combustion of solid benzoic ac... | Chemistry | TestHub
- Standard enthalpy of formation of three co... | Chemistry | TestHub
- One mole of graphite and diamond were sepa... | Chemistry | TestHub
- If enthalpies of formation for \mathrm{C}_... | Chemistry | TestHub
- The standard enthalpy of combustion of suc... | Chemistry | TestHub
- The heat evolved on combustion of 1 g of s... | Chemistry | TestHub
- Calculate the internal energy of combustio... | Chemistry | TestHub
- If the enthalpy of combustion of is , then... | Chemistry | TestHub
- Codes: P Q R S | Chemistry | TestHub
- The enthalpies of combustion of C(graphite... | Chemistry | TestHub
- Butane exist in various conformations in n... | Chemistry | TestHub
- For the allotropic change represented by t... | Chemistry | TestHub
- The enthalpy of combustion of cyclohexane,... | Chemistry | TestHub
- Identify the incorrect statement - | Chemistry | TestHub
- How many gram of sucrose \left(\mathrm{C}_... | Chemistry | TestHub
Enthalpy of Formation(28)
- \Delta \mathrm{H}_{\mathrm{f}}^{0} of \mat... | Chemistry | TestHub
- Enthalpy of formation of \mathrm{C}_{2} \m... | Chemistry | TestHub
- Calculate \Delta \mathrm{S}_{\text {univer... | Chemistry | TestHub
- Which of the following is true? | Chemistry | TestHub
- Calculate the enthalpy change (in kcal/mol... | Chemistry | TestHub
- For which one of the following equations i... | Chemistry | TestHub
- At 25^{\circ} \mathrm{C} and 1 atm pressur... | Chemistry | TestHub
- List-I List-II(P) \quad \mathrm{O}_{2}(\ma... | Chemistry | TestHub
- Which of the following reactions define mo... | Chemistry | TestHub
- The standard enthalpy of formation of \mat... | Chemistry | TestHub
- Carefully observe the given diagrams which... | Chemistry | TestHub
- The enthalpies of formation of \mathrm{FeO... | Chemistry | TestHub
- \mathrm{S}+\frac{3}{2} \mathrm{O}_{2} \lon... | Chemistry | TestHub
- The enthalpies of formation of \mathrm{FeO... | Chemistry | TestHub
- Calculate enthalpy of formation of D-ribos... | Chemistry | TestHub
- In the following question, two statements... | Chemistry | TestHub
- Enthalpy of formation of \mathrm{H}_{2} \m... | Chemistry | TestHub
- Find \Delta_{f} \mathrm{H}^{\circ} for \ma... | Chemistry | TestHub
- Heats of combustion of graphite and hydrog... | Chemistry | TestHub
- Which of the reaction(s) defines \Delta \m... | Chemistry | TestHub
- Given the following thermochemical reactio... | Chemistry | TestHub
- Calculate the enthalpy of formation of ion... | Chemistry | TestHub
- If the enthalpies of formation of \mathrm{... | Chemistry | TestHub
- Match the following. | Chemistry | TestHub
- If values of \Delta \mathrm{H}_{\mathrm{f}... | Chemistry | TestHub
- If the enthalpy of formation and enthalpy... | Chemistry | TestHub
- Identify the wrong statements. | Chemistry | TestHub
- The heat of formation of one mole of HI fr... | Chemistry | TestHub
Enthalpy of Neutralisation(18)
- of is mixed with of The molar heat of neut... | Chemistry | TestHub
- Which of the following mixing of 1 M base... | Chemistry | TestHub
- The enthalpies of neutralization of a stro... | Chemistry | TestHub
- Enthalpy of neutralization of \mathrm{H}_{... | Chemistry | TestHub
- Match the following [Given : Assume vibrat... | Chemistry | TestHub
- When 100 ml of 1 \mathrm{M} \mathrm{H}_{3}... | Chemistry | TestHub
- GivenH⁺ (aq.) + OH⁻ (aq) H₂O(ℓ) + 57 KJ HA... | Chemistry | TestHub
- (strong acid) is neutralized with in a con... | Chemistry | TestHub
- In a constant pressure calorimeter 224 ml... | Chemistry | TestHub
- The enthalpies of neutralization of a weak... | Chemistry | TestHub
- Among the following solutions, which two s... | Chemistry | TestHub
- 1 L each of 1 M HCl and 1 M NaOH are mixed... | Chemistry | TestHub
- The heat of neutralization of oxalic acid... | Chemistry | TestHub
- The enthalpies of neutralization of a weak... | Chemistry | TestHub
- 0.2 \mathrm{M} ; 100 \mathrm{ml} \mathrm{N... | Chemistry | TestHub
- A solution of 200 ml of 1 M KOH is added t... | Chemistry | TestHub
- A solution of 500 ml of 0.2 M KOH and 500... | Chemistry | TestHub
- H^{+}+OH^{-}\rightarrow H_2O;\Delta H^{o}=... | Chemistry | TestHub
Enthalpy of Reaction(134)
- If at the bond energies of and bonds are r... | Chemistry | TestHub
- The enthalpies of combustion of carbon and... | Chemistry | TestHub
- If the bond dissociation energies of and (... | Chemistry | TestHub
- The standard enthalpy of formation at for... | Chemistry | TestHub
- The enthalpy changes for the following pro... | Chemistry | TestHub
- Oxidising power of chlorine in aqueous sol... | Chemistry | TestHub
- At and 1 bar which of the following has a... | Chemistry | TestHub
- On the basis of the following thermochemic... | Chemistry | TestHub
- The species which by definition has zero s... | Chemistry | TestHub
- The standard enthalpy of formation of is .... | Chemistry | TestHub
- The enthalpy of neutralisation of with is... | Chemistry | TestHub
- Using the data provided, calculate the mul... | Chemistry | TestHub
- Given that: (i) of is (ii) Bond energies o... | Chemistry | TestHub
- The standard enthalpies of formation ofand... | Chemistry | TestHub
- Given Reaction Energy Change Based on data... | Chemistry | TestHub
- In which of the following exothermic react... | Chemistry | TestHub
- The enthalpy of combustion of 2 moles of b... | Chemistry | TestHub
- The reaction is an exothermic reaction. Ac... | Chemistry | TestHub
- For the dissociation reaction, heat of ato... | Chemistry | TestHub
- Given: The molar enthalpy of vapourisation... | Chemistry | TestHub
- For complete combustion of ethanol,,the am... | Chemistry | TestHub
- The standard enthalpy of formation for met... | Chemistry | TestHub
- The enthalpy of sublimation of aluminium i... | Chemistry | TestHub
- The standard enthalpy of formation ofis. I... | Chemistry | TestHub
- The heats of neutralisation of , and are -... | Chemistry | TestHub
- The heat of atomization of methane and eth... | Chemistry | TestHub
- Given (Electron gain enthalpy) Based on da... | Chemistry | TestHub
- The heats of combustion of carbon and carb... | Chemistry | TestHub
- Given:Based on the above thermochemical eq... | Chemistry | TestHub
- The enthalpy change on freezing ofof water... | Chemistry | TestHub
- The combustion of benzenegivesandGiven tha... | Chemistry | TestHub
- Enthalpy of combustion of methane and etha... | Chemistry | TestHub
- The difference betweenandis, when the comb... | Chemistry | TestHub
- Given:Based on the above thermochemical eq... | Chemistry | TestHub
- Choose the reaction(s) from the following... | Chemistry | TestHub
- The heat of reaction for at constant volum... | Chemistry | TestHub
- Enthalpy of sublimation of iodine isat. If... | Chemistry | TestHub
- The internal energy change (in ) when of w... | Chemistry | TestHub
- If enthalpy of atomization forisand bond e... | Chemistry | TestHub
- Lattice enthalpy and enthalpy of solution... | Chemistry | TestHub
- For which one of the processes represented... | Chemistry | TestHub
- The standard heat of formationof ethane (i... | Chemistry | TestHub
- At, the enthalpy of fusion of a solidisand... | Chemistry | TestHub
- The average bond energy in of is _. (Round... | Chemistry | TestHub
- The Born-Haber cycle for is evaluated with... | Chemistry | TestHub
- According to the following figure, the mag... | Chemistry | TestHub
- If the standard molar enthalpy change for... | Chemistry | TestHub
- The standard enthalpies of formation of an... | Chemistry | TestHub
- The reaction of cyanamide,with oxygen was... | Chemistry | TestHub
- Atthe relationship between enthalpy of bon... | Chemistry | TestHub
- For the reactionthe reaction enthalpyis(Ro... | Chemistry | TestHub
- The ionization enthalpy offormation fromis... | Chemistry | TestHub
- When of solution is mixed with of solution... | Chemistry | TestHub
- For water atandbar,(Round off to the Neare... | Chemistry | TestHub
- An average person needs aboutenergy per da... | Chemistry | TestHub
- For the reaction at The enthalpy change fo... | Chemistry | TestHub
- A gas ( Molar mass) was burnt in excessin... | Chemistry | TestHub
- ofcompletely vapourises atandbar pressure... | Chemistry | TestHub
- While performing a thermodynamics experime... | Chemistry | TestHub
- Atandpressure, the enthalpy of combustion... | Chemistry | TestHub
- Whenofis mixed withofsolution in a flask,... | Chemistry | TestHub
- The enthalpy of combustion of propane, gra... | Chemistry | TestHub
- At and atm pressure, the enthalpies of com... | Chemistry | TestHub
- For complete combustion of methanol the am... | Chemistry | TestHub
- fish swimming in water body when taken out... | Chemistry | TestHub
- ofis combusted in a fixed volume bomb calo... | Chemistry | TestHub
- of ethane undergoes combustion at in a bom... | Chemistry | TestHub
- The enthalpy change for the conversion of(... | Chemistry | TestHub
- and are diatomic molecules. If the bond en... | Chemistry | TestHub
- At , the enthalpy of the following process... | Chemistry | TestHub
- Given that bond energies of and are and re... | Chemistry | TestHub
- Consider the following dataHeat of combust... | Chemistry | TestHub
- The number of endothermic process/es from... | Chemistry | TestHub
- If enthalpies of formation of and at and p... | Chemistry | TestHub
- Given(A) (B) The for the reaction is | Chemistry | TestHub
- L of is produced on complete combustion of... | Chemistry | TestHub
- Solid fuel used in rocket is a mixture of... | Chemistry | TestHub
- For complete combustion of ethene,the amou... | Chemistry | TestHub
- Enthalpies of formation ofandareandrespect... | Chemistry | TestHub
- Given below are two statements : One is la... | Chemistry | TestHub
- The enthalpy of formation of ethane from e... | Chemistry | TestHub
- The heat of combustion of solid benzoic ac... | Chemistry | TestHub
- Two reactions are given below:Then enthalp... | Chemistry | TestHub
- The heat of solution of anhydrous and are... | Chemistry | TestHub
- The combustion of benzene (L) gives and .... | Chemistry | TestHub
- Standard enthalpy of vapourisation for is... | Chemistry | TestHub
- Combustion of 1 mole of benzene is express... | Chemistry | TestHub
- Which of the following relation is not cor... | Chemistry | TestHub
- The bond dissociation energy of and are in... | Chemistry | TestHub
- When equal volume of and are separately ne... | Chemistry | TestHub
- The bond dissociation enthalpy of calculat... | Chemistry | TestHub
- Total enthalpy change for freezing of 1 mo... | Chemistry | TestHub
- Given :The for is _____ (nearest integer v... | Chemistry | TestHub
- Given below are two statements :Statement... | Chemistry | TestHub
- If (diamond (graphite diamond C (graphite)... | Chemistry | TestHub
- Consider the following data : Heat of form... | Chemistry | TestHub
- Consider the following cases of standard e... | Chemistry | TestHub
- Practice Question | Chemistry | TestHub
- A sample of n-octane was completely burnt... | Chemistry | TestHub
- The heat of formation of is given by : | Chemistry | TestHub
- The correct statement amongst the followin... | Chemistry | TestHub
- The formation enthalpies, for and are 220.... | Chemistry | TestHub
- Consider the given data :(a) (b) Choose th... | Chemistry | TestHub
- The enthalpy change for the reaction: O(g)... | Chemistry | TestHub
- Ethyl chloride () is prepared by the react... | Chemistry | TestHub
- The difference between heats of reaction a... | Chemistry | TestHub
- Ethyl chloride \left(\mathrm{C}_{2} \mathr... | Chemistry | TestHub
- Using given reaction,(i) \frac{1}{4} \math... | Chemistry | TestHub
- A 500 gm sample of water is reacted with a... | Chemistry | TestHub
- Calculate the magnitude of heat energy lib... | Chemistry | TestHub
- Match the following: | Chemistry | TestHub
- 1 mole of gas X is present in a closed adi... | Chemistry | TestHub
- For which of the following processes/react... | Chemistry | TestHub
- Calculate (in kJ/mol) of the reaction in w... | Chemistry | TestHub
- Calculate the enthalpy of precipitation of... | Chemistry | TestHub
- Match the enthalpy change (\Delta \mathrm{... | Chemistry | TestHub
- Calculate in kJ/mol for the above reaction... | Chemistry | TestHub
- Enthalpy of hydrogenation of one mol benze... | Chemistry | TestHub
- Calculate the magnitude of ring strain ene... | Chemistry | TestHub
- Match the column: | Chemistry | TestHub
- 200 mL of 0.2 M NaOH solution is prepared,... | Chemistry | TestHub
- If \mathrm{C}_{(\mathrm{s})}+\frac{1}{2} \... | Chemistry | TestHub
- GivenCalculate the resonance energy of Ant... | Chemistry | TestHub
- Find the value of \Delta_{\mathrm{r}} \mat... | Chemistry | TestHub
- The reaction of cyanamide, \mathrm{NH}_{2}... | Chemistry | TestHub
- Heat evolved in the reaction, \mathrm{H}_{... | Chemistry | TestHub
- The amount of energy when a million atoms... | Chemistry | TestHub
- \Delta \mathrm{H}_{\mathrm{r}} of which of... | Chemistry | TestHub
- Under same conditions how many ml of 1 M N... | Chemistry | TestHub
- From the following data at 25^{\circ} \mat... | Chemistry | TestHub
- Standard enthalpy of reaction for the reac... | Chemistry | TestHub
- Match the reaction (In Column I) with rela... | Chemistry | TestHub
- For 1 mole of monoatomic gas. Calculate \D... | Chemistry | TestHub
- For 1 mole substance variation of absolute... | Chemistry | TestHub
Enthalpy of solution/dilution/hydration(8)
- The hydration energies of and are -x and -... | Chemistry | TestHub
- The enthalpy of solution of and are and re... | Chemistry | TestHub
- The correct order of the following is/arei... | Chemistry | TestHub
- A piston exerting a pressure of 1 bar rest... | Chemistry | TestHub
- One mole of soda ash dissolves in water wi... | Chemistry | TestHub
- For a certain compound MX , the lattice en... | Chemistry | TestHub
- List - IList - II(P) \mathrm{MgCl}_{2}(\ma... | Chemistry | TestHub
- The enthalpy of solution of \mathrm{BaCl}_... | Chemistry | TestHub
Hess's Law of Constant Heat Summation(18)
- Match the thermodynamic processes given Co... | Chemistry | TestHub
- The heat released when 1 mole of \mathrm{H... | Chemistry | TestHub
- Calculate the heat of formation of using t... | Chemistry | TestHub
- The enthalpy of ionisation of \mathrm{B}(\... | Chemistry | TestHub
- For the following reaction, C (diamond) +... | Chemistry | TestHub
- \mathrm{C}_{\text {(diamond) }}+\mathrm{O}... | Chemistry | TestHub
- What should be the \Delta_{\mathrm{f}} \ma... | Chemistry | TestHub
- The enthalpy of dissociation of HCN comput... | Chemistry | TestHub
- Calculate the heat of formation of methane... | Chemistry | TestHub
- The reaction is given by: Given and . Calc... | Chemistry | TestHub
- Heat of hydrogenation of ethene is x_{1} a... | Chemistry | TestHub
- The density of crystalline sodium chloride... | Chemistry | TestHub
- Calculate the enthalpy change for the give... | Chemistry | TestHub
- The enthalpy of neutralisation of a strong... | Chemistry | TestHub
- Given thatHeat of formation of acetylene i... | Chemistry | TestHub
- Using bond energy data, calculate the heat... | Chemistry | TestHub
- Practice Question | Chemistry | TestHub
- The lattice energy of solid NaCl is 772 \m... | Chemistry | TestHub
Miscellaneous/Mixed(13)
- When 100 mL of 1.0 M HCl was mixed with 10... | Chemistry | TestHub
- Match the reactions given in List-I with c... | Chemistry | TestHub
- If heat of formation of \mathrm{PCl}_{3}(\... | Chemistry | TestHub
- Two moles of an ideal gas undergoes the fo... | Chemistry | TestHub
- Calculate the \Delta \mathrm{H}_{\text {va... | Chemistry | TestHub
- Calculate proton affinity of \mathrm{NH}_{... | Chemistry | TestHub
- One mole of magnesium in the vapour state... | Chemistry | TestHub
- A mixture of and Al is used in solid fuel... | Chemistry | TestHub
- One gm sample of \mathrm{NH}_{4} \mathrm{N... | Chemistry | TestHub
- The correct option(s) about entropy(s) is(... | Chemistry | TestHub
- One mole of an ideal gas at 900 K , underg... | Chemistry | TestHub
- Total number of enthalpies (out of given e... | Chemistry | TestHub
- Which of the following correct order for t... | Chemistry | TestHub
Miscelleneous Enthalpies(6)
- Enthalpy of transition when amorphous boro... | Chemistry | TestHub
- Calculate \Delta \mathrm{G} (in kcal/mole)... | Chemistry | TestHub
- Calculate the change in enthalpy for he fo... | Chemistry | TestHub
- The enthalpy of formation of ethane and be... | Chemistry | TestHub
- If enthalpy change for hydrogenation of et... | Chemistry | TestHub
- Calculate \Delta \mathrm{S} (in \mathrm{Ca... | Chemistry | TestHub
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