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Question

SO2 reacts with O2 as follows 2SO2+O22SO3 the rate of disappearance of SO2 is 2.4×104mol lit1min1Then:

A
rate of reaction is 1.2×104molelit1min1
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B
rate of appearance of SO3 is 2.4×104molelit1min1
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C
rate of disappearance of O2 is 1.2×104molelit1min1
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D
rate or reaction is twice the rate of disappearance of SO3
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Solution

The correct option is A rate of reaction is 1.2×104molelit1min1
Rate = 12d[SO2]dt=d[O2]dt=12d[SO2]dt

Rate = 12×2.4×104 = 1.2×104 molL1min1
Similarily, the rate of appearance of SO3 will be 1.2×104 and rate of disapperance of O2 will be 1.2×104

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