Question

If the equilibrium constant for A ⇌ B + C is K_eq ⁽¹⁾ and that of B + C ⇌ P is K_eq ⁽²⁾, the equilibrium constant for A ⇌ P is

• A. K_eq ⁽¹⁾ K_eq ⁽²⁾
• B. K_eq ⁽²⁾ − K_eq ^(!)
• C. K_eq ^(!) + K_eq ⁽²⁾
• D. K_eq ⁽¹⁾ / K_eq ⁽²⁾

Answer 1

The correct option is A

K_eq ⁽¹⁾ K_eq ⁽²⁾

Solution:

• In Equation A ⇌ B + C
• Equilibrium constant K_eq ⁽¹⁾ =([B] + [C]) / [A]
• In Equation B + C ⇌ P
• Equilibrium constant K_eq ⁽²⁾ = [P] / ([B] + [C])
• As B+C ⇌P and A ⇌P, So A ⇌B+C ⇌P
• Therefore, for A ⇌P, Equilibrium constant will be K_eq (1) K_eq (2)

The correct answer is option A.