Determine the mass of sulphur (IV) oxide obtained when 91.0g of oxygen reacts completely with sulphur according to the following equation: S(s) + O2(g) → SO2(g) [S = 32; O = 16]

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A. 123g
B. 139g
C. 155g
D. 182g

Correct Answer: Option D

D. 182g

Explanation

S + O2 → SO2. According to the equation 32g of O2 produced 64g of SO2
therefor 91g of O2 will produce yg of SO2
y = 91/32

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