Complete and balance the following reaction:
$Zn + H_{2} {SO}_{4} \overset{}{\to} - - -$

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Solution

Reaction of zinc with sulphuric acid:
When zinc( $Zn$ ) reacts with sulphuric acid( $H_{2} {SO}_{4}$ ), there is the evolution of hydrogen gas( $H_{2}$ ) along with zinc sulphate( ${ZnSO}_{4}$ ) as a byproduct.
$\underset{zinc}{Zn (s)} + \underset{sulphuric acid}{H 2 {SO}_{4} (aq) \to} \underset{zinc sulphate}{{ZnSO}_{4} (aq)} + \underset{hydrogen gas}{H_{2} (g)}$
Hydrogen is a combustible gas and burns with a popping sound.

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