Question

Name the products formed when a small amount of KOH solution is added to the $ZnS{O}_4$ solution.

• A. Zinc hydroxide and sodium sulphate
• B. Sodium zincate and water
• C. Sodium zincate and sodium suphate
• D. Zinc hydroxide and water

Answer 1

The correct option is A

Zinc hydroxide and sodium sulphate

When $ZnS{O}_4$ solution is added to KOH solution, a gelatinous white precipitate of zinc hydroxide is formed along with potassium sulphate.

$\underset{Colourless}{ZnS{O}_4}+\underset{Colourless}{2KOH}\to \underset{White,gelatinousppt.}{Zn(OH{)}_2}+\underset{Colourless}{K_{2}S{O}_4}$