Răspuns :
CH3COOH⇄CH3COO + H
Ka=[CH3COO⁻][H⁺]/[CH3COOH]-->[H⁺]=[CH3COO⁻]--->
[H⁺]²= Kax[CH3COOH],
[H⁺]=√10⁻⁵X10⁻²=4√10
pH= -lg[H⁺]=> 4-lg√10..=.......................
Ka=[CH3COO⁻][H⁺]/[CH3COOH]-->[H⁺]=[CH3COO⁻]--->
[H⁺]²= Kax[CH3COOH],
[H⁺]=√10⁻⁵X10⁻²=4√10
pH= -lg[H⁺]=> 4-lg√10..=.......................