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05/10/2020 5:17 pm
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S + O2 → SO2 + x kcal .....(1)
SO2 + 1/2O2 → SO3 + y kcal ....(2)
The heat of formation of SO3 in the above reaction is
(a) (x + y)
(b) (x – y)
(c) (2x – y)
(d) (2x + y)
1 Answer
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05/10/2020 5:19 pm
(a) (x + y)
Explanation:
S + O2 → SO2 + x .....(1)
SO2 + 1/2O2 → SO3 + y ....(2)
Adding (i) and (ii), we have
S + O2 + SO2 + 1/2O2 → SO2 + SO3
S + 1 1/2O2 → SO3
So, heat of formation of SO3 will be (x + y).