A weak acid, HA, has a Ka of 1.00 $ \times $ 10$-$5. If 0.100 mol of this acid is dissolved in one litre of water, the percentage of acid dissociated at equilibrium is closest to

Question

A weak acid, HA, has a K_a of 1.00 $ \times $ 10^$-$5. If 0.100 mol of this acid is dissolved in one litre of water, the percentage of acid dissociated at equilibrium is closest to

1.00%