For the reversible reaction. a(g) = b(g). which k values would indicate that there is more b then a at equilibrium? a)k=7x10^-9. b)k=4000. c)k=0.2. d)k=1x10^6

Answer is both (b) and (d).

Explanation;

Equilibrium constant is written as a ratio between concentrations of products and reactants.

The equilibrium reaction is

A(g) ⇄ B(g)

Hence, the equilibrium constant can be expressed as

K = [B(g)] / [A(g)]

If there is more B, then A should be less. Hence, K value would be more than 1.

Hence, according to the given choices, K = 4000 and K = 1 x 10⁶ can be taken as correct answers.

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