$. . . C (s) + . . . H_{2} {S O}_{4} (l) \to {C O}_{2} (g) + . . . {S O}_{2} (g) + . . . H_{2} O ()$
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:

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Solution

The correct option is A 2
The balanced chemical equation is:
$C (s) + 2 H_{2} {S O}_{4} (l) \to {C O}_{2} (g) + 2 {S O}_{2} (g) + 2 H_{2} O (l)$
The coefficient of $S O_{2}$ is 2.

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