Giải
Ta có
\(\eqalign{ & K_a{{{(HN{O_2})}}} > K_a({{{C{H_3}COOH}}}) \cr & \Rightarrow {\left[ {{H^ + }} \right]_{_{HN{O_2}}}} > {\left[ {{H^ + }} \right]_{C{H_3}COOH}} \cr} \)
\(\Rightarrow {n_{H_{HN{O_2}}^ + }} > {n_{H_{C{H_3}COOH}^ + }}\)
\(\Rightarrow {\alpha _{\left( {HN{O_2}} \right)}} > {\alpha _{\left( {C{H_3}COOH} \right)}} \)
