Question

Which of the following statement/s is/are true?

                        is formed when zinc reacts with sodium hydroxide.

Statement 1: Sodium zincate.

Statement 2: Hydrogen gas.

1. Only 1
2. Only 2
3. Both 1 & 2.
4. Neither 1 nor 2.

Answer 1

Correct Answer - Option 3 : Both 1 & 2.

The correct answer is Both 1 & 2.

• Sodium zincate and hydrogen gas are formed when zinc reacts with sodium hydroxide.
• The following reaction takes place when zinc reacts with sodium hydroxide:
  •  Zn + 2NaOH → Na₂Zn0₂ (Sodium Zincate) + H₂

• Zinc is a transition metal which shows mild reactivity.
• In the salt produced during the reaction between a base and a metal, the metal is present as a part of the negative ion.
• The zinc metal is present as a part of the negative ion, zincate ion (ZnO₂^2-) in the sodium zincate salt (Na₂ZnO₂).