CH3COOH+H2O--CH3COO-+H3O+
已知醋酸的Ka=1.8x10-5
Ka=(CH3COO-)(H3O+)/(CH3COOH)
=1.8x10-5
9. 一溶液中含有 0.50M 醋酸與 0.50M 之醋酸鈉,則此溶液中 H3O..-阿摩線上測驗