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Select the correct statement/s.
A solution of (R) – 2 – iodobutane , [ $α$ ] = ${15.9}^{o}$ in acetone is treated with radioactive iodied, Until 1.0% of iodobutane contain radioactive iodine, the specific rotation of recovered iodobutane is found to be $- {15.58}^{o}$ , which statement is correct about above information?

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% of R in solution is 99%

Final solution is dextrorotatory

Racemic mixture is 2%

It has optical purity 96%

answer is B, C.

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Detailed Solution

% R = 100 - $\frac{15.58}{15.9}$ = 99%

% Racemic mixture = $\frac{15.9 - 15.58}{15.58} \times 100 = 2 %$

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