Ответ:

Объяснение:

CH=-CH + H2O -> CH3COH   (t, Hg(2+))

CH3COH + Ag2O -> CH3COOH + 2Ag↓  (NH3)

CH3COOH + NaOH -> CH3COONa + H2O

CH3COONa + H2SO4 -> CH3COOH + NaHSO4