The balanced molar relationship for the reaction given below is:
$H_{2} O_{2} \to H_{2} O + O_{2}$

1 : 1 : 1

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2 : 1 : 1

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1 : 2 : 1

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2 : 2 : 1

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2 : 1 : 2

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Solution

The correct option is D $2 : 2 : 1$
The unbalanced chemical equation is:
$H_{2} O_{2} \to H_{2} O + O_{2}$
Here, hydrogen atoms are balanced. The oxygen atoms can be balanced if we multiply $H_{2} O_{2}$ with 2 and $H_{2} O$ with 2.

$2 H_{2} O_{2} \to 2 H_{2} O + O_{2}$

So, the balanced molar relationship for the reaction is $2 : 2 : 1$ .

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