1.

Starting with one mole of a compound X it is found that the reaction is 3/4 complete in 1 min . What is the rate constant if the reaction follows first order ?

Answer»

`0.213 SEC^(-1)`
`2.31 sec^(-1)`
`0.0231 sec^(-1)`
`2.31 xx10^(-3) sec^(-1)`

Solution :(C ) `t_(3//4) = (2.303)/(K)` LOG 4
`:. K = (2.303)/(60 sec)"log" 4 = (2.303xx0.602)/(60)`
`=0.0231 sec^(-1)`


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