Two reactions are given below ( i ) C O ( g ) + 1 2 O 2 ( g ) → C O 2 ( g ) ( i i ) A g 2 O ( s ) → 2 A g ( s ) + 1 2 O 2 ( g ) Which of the following statements is true?

As Δ H = Δ E + Δ n g R T For (i) Δ n g = 1 - 3 2 = - 1 2 As here Δ n g is negative (-1/2) so Δ H Δ E

Start Free Mock LoginAlready registered? Login here

Chemistry - Thermochemistry Question with Solution | TestHub

ChemistryThermochemistryEnthalpy of ReactionEasy2 minPYQ_2020

ChemistryEasysingle choice

Two reactions are given below
$(i)$ $C O (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g)$
$(i i)$ $A g_{2} O (s) \to 2 A g (s) + \frac{1}{2} O_{2} (g)$
Which of the following statements is true?

Options:

Answer:

Solution:

As $Δ H = Δ E + Δ n_{g} R T$
For (i) $Δ n_{g} = 1 - \frac{3}{2} = - \frac{1}{2}$
As here $Δ n_{g}$ is negative (-1/2) so $Δ H < Δ E$
For (ii) $Δ n_{g} = \frac{1}{2} - 0 = \frac{1}{2}$
As here $Δ n_{g}$ is positive (+1/2) so $Δ H > Δ E$

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of Reaction

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...