Question

# In the following reaction, $$A\rightarrow B$$, rate constant is $$1.2\times10^{-2}\:M\:s^{-1}\:$$. What is concentration of B after 10 min, if we start with 10 M of A?

A
7.2 M
B
14.4 M
C
3.6 M
D
None of these

Solution

## The correct option is A 7.2 M$$k=1. 2 \times 10^{–2}Ms^{–1}$$ Since unit of rate constant is $$Ms^{–1}$$, it is zero orderreactionRate law $$[B] = kt$$At t = 10 min$$[B] = 1. 2 \times 10^{–2} \times 10 \times 60\ M$$$$[B] = 7. 2\ M$$Chemistry

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