H2SO4>HCl>H3PO4>CH3COOH
等物质的量浓度,盐酸和硫酸都是强酸,1个H2SO4含有2个H+,1个HCl含有1个H+,所以H2SO3>HCl
H3PO4和CH3COOH看Ka,H3PO4的Ka1=6.92*10^-3,CH3COOH的Ka=1.75*10^-5
H2SO4>HCl>H3PO4>CH3COOH
等物质的量浓度,盐酸和硫酸都是强酸,1个H2SO4含有2个H+,1个HCl含有1个H+,所以H2SO3>HCl
H3PO4和CH3COOH看Ka,H3PO4的Ka1=6.92*10^-3,CH3COOH的Ka=1.75*10^-5