Ion Electron Method

ZnSs+ O2 g→...

Question

_ $Z n S_{(s)} +$ _ $O_{2 (g)} \to$ _ $Z n O_{(s)} +$ _ $S O_{2 (g)}$
When the equation for the reaction represented above is balanced and the coefficients are reduced to the lowest whole number terms, the coefficient for $S O_{2}$ is:

1

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2

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3

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4

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Solution

The correct option is C $2$
The equation can be written as
$2 Z n S$ $+$ $3 O_{2}$ $=$ $2 Z n O$ $+$ $2 S O_{2}$
The coefficient of $S O_{2}$ is 2
Thus, option B is the correct answer.

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