Question

What happens when (8)

i) Magnesium oxide reacts with dil. HCl

ii) Zinc oxide reacts with dil. H2SO4

iii) Zinc reacts with Sodium hydroxide solution.

iv) Copper (II) oxide reacts with dil. Hydrochloric acid​

Answer 1

Explanation:

the answer is (2)zinc oxide react with dil.H2SO4

Answer 2

Explanation:

1:HCL?

The reaction between magnesium (Mg) and hydrochloric acid (HCl) combine to form a salt of magnesium chloride (MgCl) and release hydrogen gas

2:when zinc reacts with dilute sulphuric acid , Zinc sulphate is formed & Hydrogen gas is evolved. 2. ZnO + H2SO4 ———-> ZnSO4 + H20 ( Balanced equation). when Zinc Oxide reacts with dilute sulphuric acid , zinc Sulphate & Water is formed.

3:Zinc react with excess sodium hydroxide to form sodium zincate(Na2ZnO2) along with hydrogen gas. ... Zinc reacts with sodium hydroxide to produce zincate sodium and hydrogen.

4:Reactions. Copper(II) oxide dissolves in mineral acids such as hydrochloric acid, sulfuric acid or nitric acid to give the corresponding copper(II) salts: ... CuO + 2 HCl → CuCl2 + H2O. CuO + H2SO4 → CuSO4 + H2O.

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