Question

A chemical reaction, $A\rightleftharpoons B$, is said to be in equilibrium when:

• A. Rate of forward reaction is equal to rate of backward reaction
• B. Conversion of $A$ to $B$ is only $50$% complete
• C. Complete conversion of $A$ to $B$ has taken place
• D. Only $25$% conversion of $A$ to $B$ has taken place

Answer 1

The correct option is A Rate of forward reaction is equal to rate of backward reaction

A chemical reaction, $A\rightleftharpoons B$, is said to be in equilibrium when rate of forward reaction is equal to rate of backward reaction.
Neither the forward reaction nor the backward reaction has ceased. Hence, the state of equilibrium refers to dynamic state.