# Hydrolysis and Hydration

Does Ammonium Acetate, a salt of a weak base and weak acid, undergo both hydration and hydrolysis in aqeous solution? What is meant by the statement that " Some hydration reactions are hydrolysis"

• Hydrolysis and hydration are quite totally unrelated. – Ivan Neretin Mar 31 '19 at 8:34
• :-) Quite or totally ? :-) Both involve water. – Poutnik Mar 31 '19 at 11:27

• Hydrolysis is reaction with water, forming usually 2 different reaction products. It can be also named decomposition by water.

• Hydration is (usually) reversible chemical bonding of water. It can be also named water addition.

• One action of above can preceed or follow the other. If the hydration step preceeds hydrolysis in the reaction kinetics, the distinction may look vaque from some points of view.

• Ammonium acetate undergo hydrolysis.

\begin{align} \ce{CH3COONH4 &-> CH3COO- + NH4+} \\ \ce{CH3COO- + H3O+ &<=> CH3COOH + H2O } \\ \ce{CH3COO- + H2O &<=> CH3COOH + OH- } \\ \ce{NH4+ + H2O &<=> NH3 + H3O+} \\ \ce{NH4+ + OH- &<=> NH3 + H2O} \\ \ce{2 H2O &<=> H3O+ + OH-} \end{align}

• Please note that $\ce{<->}$ arrow denotes resonance. For equilibrium or reversible reactions in general $\ce{<=>}$ is more suited (also it won't hurt to align a set of related reactions about the arrow marks:) ). – andselisk Mar 31 '19 at 11:00
• Yes, I know, I have forgotten to use =. Also, it does not hurt if it is not aligned on the phone. :-) The markdown script is not available. – Poutnik Mar 31 '19 at 11:05
• Well, you just confirmed the fact that phones are poorly suited for content creation:) – andselisk Mar 31 '19 at 11:08
• I have never needed that confirmation :-) But I am not going to publish my answer either. Additionally, the web editor alone is poorly suited either. :-) – Poutnik Mar 31 '19 at 11:10
• I have never remembered until now, what is right, \align{begin}, or \begin{align} – Poutnik Mar 31 '19 at 11:34