JEE PYQ: P Block Elements Question 56
Question 56 - 2019 (10 Apr Shift 2)
For the reaction, $2\text{SO}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{SO}_3(g)$, $\Delta H = -57.2$ kJ mol$^{-1}$ and $K_c = 1.7 \times 10^{16}$
Which of the following statement is INCORRECT?
(1) The equilibrium constant is large suggestive of reaction going to completion and so no catalyst is required.
(2) The equilibrium will shift in forward direction as the pressure increases.
(3) The equilibrium constant decreases as the temperature increases.
(4) The addition of inert gas at constant volume will not affect the equilibrium constant.
Show Answer
Answer: (1)
Solution
Equilibrium constant has no relation with catalyst. Catalyst only affects the rate of the reaction. Catalyst $\text{V}_2\text{O}_5$ in the given reaction, is used to speed up the reaction.