Q.

The rate of formation of SO3 in the following reaction: 

2SO2+O22SO3 is 10 g sec-1. The rate of disappearance of O2 will be 

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a

5 g sec1

b

100 g sec1

c

20 g sec

d

2 g sec1

answer is D.

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Detailed Solution

2SO2+O22SO3rSO3=10 g/sec=1080 mol/secAlso, rO21=rSO32rO2=1080×12 mol/sec=(10160)×32 g/sec=2 g/sec

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