Question

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Answer 1

Answer : The balanced chemical equation will be:

(i)
`2K+H_2SO_4\rightarrow K_2SO_4+H_2`

(ii)
`Mg(OH)_2+Zn\rightarrow Zn(OH)_2+Mg`

Explanation :

Balanced chemical equation : It is defined as the equation in which total number of individual atoms on the reactant side is equal to the total number of individual atoms on product side.

Part (i):

The balanced chemical equation will be:

`2K+H_2SO_4\rightarrow K_2SO_4+H_2`

This reaction is a single displacement reaction in which most reactive element (potassium) displaces the least reactive element (hydrogen) form their solution.

Part (ii):

The balanced chemical equation will be:

`Mg(OH)_2+Zn\rightarrow Zn(OH)_2+Mg`

This reaction is a single displacement reaction in which most reactive element (zinc) displaces the least reactive element (magnesium) form their solution.