1.

The rate of a first-order reaction is 0.04 mol l^(-1) s^(-1) at 10 seconds and 0.03 mol l^(-1)s^(-1) at 20 seconds after initation of the reaction.The half life perriod of the reaction is ……

Answer»

34.1
44.1 s
54.1s
24.1 s

Solution :`K=(2.303)/(10)`log`(0.04)/(0.03)=(2.303xx0.124)/(10)`
`t_((1)/(2))=(2.303xx0.3010xx10)/(2.303xx0.124)=24.27` second


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