酯怎么变成酸的方程式（酯是怎么还原成醇的呢）

酯在酸性条件下水解生成相应的酸和醇，在碱性条件下水解生成相应的酸的盐和醇．
酸性条件：

H+△

RCOOH+R′OH
CH3COOC2H5+H2O

催化剂

CH3COOH+CH3CH2OH．
碱性条件：

→RCOONa+R′OH如：CH3COOC2H5+NaOH→CH3COONa+CH3CH2OH．故答案为：RCOOH+R′OH；CH3COOH+CH3CH2OH；RCOONa+R′OH；CH3COONa+CH3CH2OH．