Reversible reaction is studied graphically as shown in the given figure. N2O4 leftharpoons 2NO2, Kc=4 Select the correct statements out of I, II and III. I. Reaction quotient has maximum value at point A. II. Reaction proceeds left to right at a point when [N2O4] = [NO2] =0.1 m. III. Kc=Q when point D or F is reached.

Question

Reversible reaction is studied graphically as shown in the given figure. N2O4 leftharpoons 2NO2, Kc=4 <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/23342eeaf9c9dab0a95b15561f236bc3-.jpeg" /> Select the correct statements out of I, II and III. I. Reaction quotient has maximum value at point A. II. Reaction proceeds left to right at a point when [N2O4] = [NO2] =0.1 m. III. Kc=Q when point D or F is reached. (A) I, II (B) II, III (C) I, III (D) I, II, III

Tardigrade Admin · Accepted Answer

I. Q=([NO2]2/[N2O4]) Since, [NO2] is minimum and [N2O4] is maximum at point A, hence Q is minimum at this point. Thus, false. II. Q=((0.1)2/(0.1))=0.1 < Kc Thus, reaction proceeds left to right. Thus, true. III. Kc = Q when equilibrium is reached at point D or F. Thus, true.

I, II

II, III

I, III

I, II, III

I. Q=[N2​O4​][NO2​]2​ Since, [NO2​] is minimum and [N2​O4​] is maximum at point A, hence Q is minimum at this point. Thus, false. II. Q=(0.1)(0.1)2​=0.1<Kc​ Thus, reaction proceeds left to right. Thus, true. III. Kc​=Q when equilibrium is reached at point D or F. Thus, true.