Question

For a reversible reaction, A + B $\rightleftharpoons$ $\rightleftharpoons$ C+ D, the graph for rate of reaction with time is given below.

Mark the terms (p), (q) and (r).

• A. (p) – rate of backward reaction (q) – rate of forward reaction (r) – equilibrium
• B. (p) – rate of forward reaction (q) – rate of backward reaction (r) – equilibrium
• C. (p) – concentration of product (q) – concentration of reactant (r) – rate of reaction
• D. (p) – instantaneous rate of reaction (q) – variation of rate (r) – average of rate of reaction

Answer 1

Answer: (B)

(p) – rate of forward reaction

(q) – rate of backward reaction

(r) – equilibrium

Answer 2

Rate of forward reaction decrease and rate of backward reaction increase with passage of time. At equilibrium both the rates become equal.