Question

in the given Reaction
A + 3B-
2C
The rate of formation of C is 2.5x10-4 mol-1 s-1 Calculate the
a) Rate of reaction
b) Rate of disappearance of B.
​

Answer 1

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CHEMISTRY

For the reaction 2A+B→C, the rate of formation of C is 0.25 mol L

−1

hr

−1

. What is the rate of disappearance of A and B?

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ANSWER

2A+B→C

Rate of formation of C=

dt

d[C]

=0.25molL

−1

hr

−1

Rate of disappearance of A=

2

1

dt

d[A]

(

2

1

is because 2 is coefficient of A)

Rate of disappearance of B=

dt

d[B]

Rate of disappearance of A & B = Rate of formation of B

2

1

dt

d[A]

=

dt

d[B]

=

dt

d[C]

=0.25molL

−1

hr

−1

Rate of disappearance of A=2×0.25molL

−1

hr

−1

=0.50molL

−1

hr

−1

Rate of disappearance of B=0.25molL

−1

hr

−1

Explanation:

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