Given:
(i) ,
(ii) ,

If the degree of dissociation and initial concentration of both reactants X(g) and A(g) are equal, then the ratio of total pressure at equilibrium . The value of x is (Nearest

Question

Given:
(i) , 
(ii) ,

If the degree of dissociation and initial concentration of both reactants X(g) and A(g) are equal, then the ratio of total pressure at equilibrium . The value of x is  (Nearest integer)

Canvas Classes · Accepted Answer

🧠 Two Dissociations, Same  — Compare Their  Expressions

Two equilibria are given. In (i) , one mole of gas becomes two (). In (ii) , again one mole becomes two (). The setups look symmetric, but the stoichiometry inside the  expression differs — that asymmetry is what makes  even though  and initial concentration are the same.

The first move is to write  for each reaction in terms of the total pressure  and the degree of dissociation , then divide.

🗺️ Working It Out

Take initial moles of X

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