The following equilibrium exists in aqueous solution `CH _(3) COOH hArr CH _(3) COO ^(-) + H ^(+)` If dil HCl is added without change in temperature, the

Options

A. concentration of `CH_(3)COO^(-)` will increase
B. concentration of `CH_(3)COO^(-)` will decrease
C. the equilibrium constant will increase
D. the equilibrium constant will decrease.

Answer

B

Explanation

`CH_(3)COOH hArr CH_(3)COO^(-) + H^(+)`
If dil. HCL is added to the above equilibrium, due to the common ion effect the concentration of `CH_(3)COO^(-)` decreases.