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Analytical Chemistry Uses of Ammonium Hydroxide and Sodium Hydroxide — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryAnalytical Chemistry Uses of Ammonium Hydroxide and Sodium Hydroxide1 Mark
MCQ
Which reaction best describes the interaction between zinc oxide and sodium hydroxide?
  • A
    Zinc oxide reacts to form zinc chloride.
  • B
    Zinc oxide does not react with sodium hydroxide.
  • ✓
    Zinc oxide reacts to form sodium zincate.
  • D
    Zinc oxide reacts to release hydrogen gas.
✓

Answer

Correct option: C.
Zinc oxide reacts to form sodium zincate.
(c) Zinc oxide reacts to form sodium zincate.
Explanation :
Zinc oxide is amphoteric and reacts with sodium hydroxide to form sodium zincate. The reaction can be written as : $ZnO +$ $2 NaOH + H _2 O \rightarrow Na _2 Zn ( OH )_4$. This shows the ability of zinc oxide to react with both acids and bases.

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