Question

A metal “X” is available in the form ribbon is burnt in air to form white ashes “Y”. When “Y” is dissolved in water it forms a solution “Z” which turns red litmus blue. Identify ‘X’, ‘Y’ and ‘Z’. Write suitable word equations for the reaction.

Answer 1

x-magnesium

y-magnesium oxide

z-magnesium hydroxide

Answer 2

Answer:

Explanation:

The metal X is Magnesium and the white ashes formed on burning magnesium ribbon is Y( Magnesium oxide).

2Mg+O2→2Mg0(Balanced chemical equation)

Mg+O2→MgO(Unbalanced chemical equation)

So Magnesium+Oxygen→Magnesium oxide

When Y(Magnesium oxide) is dissolved in water, it forms a solution Z(Magnesium Hydroxide)

Since Magnesium Hydroxide is a base, it turns red litmus blue.

MgO+H20→Mg(OH)2

Magnesium oxide+ Water →Magnesium Hydroxide

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