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The reaction \mathrm{2 P+Q+R \rightarrow A+2 B}  is found to be 1^{\text {st }} order with P, 2^{\text {nd }} order with Q and zeroth order for R. How many times rate increased by moreasing conc of P, Q, R three times?

 

Option: 1

8


Option: 2

3


Option: 3

9


Option: 4

27


Answers (1)

best_answer

\mathrm{ Rate =k[P]^1[Q]^2[R]^0}
After increasing P, Q, R three times.

\begin{aligned} \text { Rate}_2 & =\mathrm{k[3 P]^1[3 Q]^2[3 R]^0 }\\ & \mathrm{=27 k[P]^1[Q]^2[R]^0 }\\ \text { Rate}_2 & =\mathrm{27 \text { Rate}_i} \end{aligned}

Posted by

Irshad Anwar

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