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  •  The rate constant of the reaction  is <img alt="\mat

 The rate constant of the reaction \mathrm{A \rightarrow B} is \mathrm{0.6\times10^{-3}}  mole per second. If the concentration of A is 5 M, then concentration of B after 20 minutes is

 

Option: 1

0.36 M 


Option: 2

0.72 M 


Option: 3

1.08 M 


Option: 4

3.60 M


Answers (1)

best_answer

Order of reaction is zero as unit of rate constant is mole per second.

For a zero order reaction, concentration of reactant

\mathrm{A= A_0-K t \\ }\mathrm{ \Rightarrow A=5 \mathrm{M}-0.6 \times 10^{-3} \times 20 \times 60 \mathrm{M} \\ }

\mathrm{ \Rightarrow A=5 \mathrm{M}-0.72 \mathrm{M} }.

Since, concentration of reactant is reduced by 0.72M, the concentration of product is 0.72 M after 10 minutes.

 

Posted by

Gautam harsolia

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