Question

In which of the following reactions, the concentration of product is higher than the concentration of reactant at equilibrium ?(K $=$ equilibrium constant)

• A. $A\iff B;K=0.001$
• B. $M\iff N;K=10$
• C. $X\iff Y;K=0.005$
• D. $R\iff P;K=0.01$

Answer 1

Answer: (B)

$M\iff N;K=10$

For the reaction $M\iff N$ the value of the equilibrium constant $K=10$ which is greater than 10. Thus for this reaction, the concentration of products is greater than the concentration of the reactants.
For the remaining 3 reactions, the value of the equilibrium constant is less than 1. For such reactions, the concentration of reactants is more than the concentration of products.