Question

In which of the following reaction product is more stable :-
(1) N, + 3H, = 2NH, ; K, = 2.3 x 10-2 (2) N, + 0,= 2NO ; K, = 2 x 102
(3) H, +1, + 2HI ; K, = 294
(4) XeO + o, + FeXeO,F, ; K =14 x 10^-3​

Answer 1

(3)

Explanation:

more is the k, more the product stable as

k=kf/kb and more the numerator says stability in forward direction

hence product being more stable

Answer 2

In the third reaction products are most stable.

• The rate constant of a reaction can give a clear idea about the stability of the product.
• Rate of a reaction = $\frac{Rate\ of\ forward\ reaction }{rate\ of\ backward\ reaction}$
• So if the rate of a reaction is more that means the rate of the forwarding reaction is greater than the rate of the backward reaction.
• The forward reaction gives products.
• The forward reaction is more means product formation is more feasible or products are more stable.
• In the given options, the reaction is represented by the third equation:
• H, +1, + 2HI ; K, = 294, rate constant is more.
• That means it is the reaction where products are most stable.
• #SPJ2