Question

Question 7.13 The equilibrium constant expression for a gas reaction is,

Kc = [NH3]^4 [O2]^5 / [NO]^4 [H2O]^6

Write the balanced chemical equation corresponding to this expression.

Class XI Equilibrium Page 225

Answer 1

concept :- if any reaction in such a way that
aA + bB <=> cC + dD
$then, K_c=\frac{[C]^c[D]^d}{[A]^a[B]^b}$

Here,
$K_c=\frac{[NH_3]^4[O_2]^5}{[NO]^4[H_2O]^6}$
so, in reaction ,
coefficient of NH3 = 4 ,coefficient of O2 = 5
coefficient of NO = 4, coefficient of H2O = 6
hence, the reaction will be
4NO + 6H2O → 4NH3 + 5O2

Answer 2

Hi

Here is your answer,

The expression shows that 4NO and 6H₂O are reactants and 4NH₃ AND 5O₂ are products. Thus, the balanced equation is

                    4NO + 6H₂O → 4NH₃ + 5O₂


Hope it helps you !