What numerical value of $x$ is required to balance the equation below?
$2 H_{2} S + x O_{2} \to 2 S O_{2} + 2 H_{2} O$

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Solution

The correct option is B 3
In the given equation oxygen molecule is not balanced. It has 6 molecules in total on right hand side but on left hand side it is only two, so if a value of 3 is given to oxygen it gets equal with 6 molecules on both sides. Hence, 3 is the numerical value required to balance the equation.

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