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In the following reaction and graph:$2H_2O_2(l)\rightarrow 2H_2O_2+O_2(g)$, he average rate of reaction is greatest in which time period?

 

T

$\begin{array}{1 1}(a)\;0-2minute\\(b)\;0-4minute\\(c)\;0-6minute\\(d)\;0-8minute\end{array}$

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Average rate=$\large\frac{C_1-C_1}{t_2-t_1}$
So
For 0-2minutes $R_{avg}=\large\frac{10-0}{2}$$=5$
For 0-4minutes $R_{avg}=\large\frac{15-0}{4}$$=3.7$
For 0-6minutes $R_{avg}=\large\frac{20-0}{6}$$=3.3$
For 0-8minutes $R_{avg}=\large\frac{25-0}{8}$$=3.12$
Hence (a) is the correct answer.
answered Dec 17, 2013 by sreemathi.v
 

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