1.

In a first order reaction the (a)/((a-x)) value was found to be 10 after 15 minutes . The rate constant of the reaction is

Answer»

`0.153 "MIN"^(-1)`
`0.135 "min"^(-1)`
`0.315 "min"^(-1)`
`0.351 "min"^(-1)`

Solution :`K = (2.303)/(t)` LOG `(a)/(a-x)`
`k = (2.303)/(15)` log 10 = `0.153 "min"^(-1)`


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