First slide
First order reactions
Question

For a first order reaction a graph is plotted between logaax(y-axis)  vs time in minutes(x-axis). If the slope of the graph is 0.1 then the half life of the reaction will be

Moderate
Solution

K=2.303tlogaaxlogaa-x= Kt2.303                        y=mx                   slope=K2.303K2.303=0.1givenK=0.2303min1t12=0.6930.2303minutest12=0.6930.2303×60seconds=180seconds

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