For the hypothetical reaction 2A+3B→products, the rate of disappearance of A is r1 and the rate of appearance of B is r2. These are related as:
A
r1=r2
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B
2r1=3r2
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C
3r1=2r2
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D
r21=r32
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Solution
The correct option is C3r1=2r2 The expression for the rate of the reaction is, r=−12d[A]dt=−13d[B]dt. But d[A]dt=r1 and d[B]dt=r2. Hence, r=−12r1=−13r2 or 3r1=2r2.