Question

Are acid-base reactions also redox reactions?

Answer 1

• A reaction in which electrons are transferred between two reactants participating in it can be termed as redox reaction.
• 
• Here $\mathrm{Zn}$ gets oxidized by losing two electrons and ${\mathrm{H}}^{+}$gets reduced by gaining two electrons, hence oxidation number of the reactants changes.
• In case of acid-base reactions, there is a transfer of hydrogen ions instead of electrons, and the transfer of hydrogen ions does not change the oxidation number
• 
• Here the oxidation number of the elements remains the same.
• Hence the acid-base reactions are not redox reactions.