Sulphur trioxide is prepared by the following two reactions: S8(s)+8O2(g)→8SO2(g) 2SO2(g)+O2(g)→2SO3(g) How many grams of SO3 arc produced from 1 mole of S8?
A
1280
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B
640
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C
960
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D
320
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Solution
The correct option is B 640 From the given reaction, it is clear that 1 mole of S8 will give 8 moles of SO3. Mass of SO3 formed = Number of moles × Molar mass =8×80=640g