Chemistry - Chemical Equilibrium Question with Solution | TestHub
Match Column I with Column II
Column I | Column II |
|---|---|
P) 2SO3(g) ⇌ 2SO2(g) + O2(g) | i) Introduction of oxygen gas at constant volume shift equilibrium back |
Q) N2O4(g) ⇌ 2NO2(g) | ii) α increases on increasing temperature |
R) 2HI(g) ⇌ H2(g) + I2(g) | iii) On adding inert gas at constant volume, equilibrium state does not change |
S) NH4Cl(s) ⇌ NH3(g) + HCl(g) | iv) On increasing the pressure, concentration of all reactants increases |
| v) α is independent of equilibrium pressure |
Options:
Answer:
Solution:
P: O2 is a product, so adding it at constant volume shifts the equilibrium back (i); decomposition of SO3 is endothermic so α rises with temperature (ii); inert gas at constant volume changes nothing (iii); compression raises the gas concentrations (iv) Q: O2 is not involved so (i) fails; decomposition of N2O4 is endothermic (ii); inert gas at constant volume changes nothing (iii); compression raises concentrations (iv); α falls as pressure rises, so (v) fails
R: O2 is not involved so (i) fails; HI dissociation is endothermic (ii); inert gas at constant volume changes nothing (iii); compression raises concentrations (iv); Δ ng = 0 so α is independent of pressure (v)
S: O2 is not involved so (i) fails; decomposition is endothermic (ii); inert gas at constant volume changes nothing (iii); on compression the gaseous concentrations increase (iv); α depends on pressure, so (v) fails
The correct mapping is option (b).
