Question

Write the balanced equation for the reaction of potassium hydroxide with zinc.

Answer 1

• The metal reacts with a base then salt is formed along with the evolution of Hydrogen gas.
• Zinc is an active metal with amphoteric nature. So, Zinc reacts with Potassium hydroxide to form Potassium zincate which is a salt.
• The reaction is given below.
• $$\begin{gathered} \mathrm{Zn}\left(\mathrm{s}\right)+2\mathrm{KOH}\left(\mathrm{aq}\right)\to {\mathrm{K}}_2{\mathrm{ZnO}}_2\left(\mathrm{aq}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right) \\ \mathrm{Zinc}\mathrm{Potassium}\mathrm{hydroxide}\mathrm{Potassium}\mathrm{zincate}\mathrm{Hydrogen} \end{gathered}$$