1.

A pure sample of 2-chlorobutane shows rotation of PPL by 30º in standard conditions. When above sample is made impure by mixing its opposite form, so that the composition of the mixture become 87.5% d-form and 12.5% l-form, then what will be the observed rotation for the mixture.

Answer»

`-22.5^(@)`
`+22.5^(@)`
`+7.5^(@)`
`-7.5^(@)`

ANSWER :B


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