Question

A characteristic feature of reversible reactions is that:

• A. they never proceed to completion
• B. they proceed to completion
• C. they are not complete unless the reactants are removed from the sphere of reaction mixture
• D. none of the above

Answer 1

The correct option is A they never proceed to completion

A characteristic feature of reversible reactions is that they never proceed to completion.
Reversible reactions always attain equilibrium and never go for completion. Reversible reactions, however a static equilibrium is not being established.In these most of the reactions when carried out in closed vessels do not go to completion, under a given set of conditions of temperature and pressure. In fact in all such cases, in the initial state, only the reactants are present but as the reaction proceeds, the concentration of reactants decreases and that of products increases. Finally a stage is reached when no further change in concentration of the reactants and products is observed.