1.

For a reaction AtoB+C. It was found that at the end of 10 minutes from the start.The total optical rotation of the system was 50^(@) and when the reaction is complete it qws 100^(@). Assume that only B and C are optically active and dextro rotatory, the rate constant of this first order reaction wouldbe

Answer»

`6.9"min"^(-1)`
`0.069"min"^(-1)`
`0.69"min"^(-1)`
`6.9xx10^(-2)"min"^(-2)`

Solution :`[C_(0)-X[x""x`
`0""C_(0)""C_(0)`
`C_(0)alpha50,xoo25.K=2.303/10xxlog(50/25)=(2.30xx0.3010)/10=0.693/10=0.0693"min"^(-1)`


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