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Q.

Select the correct statement/s.

 A solution of (R) – 2 – iodobutane , [ α] = 15.9oin acetone is treated with radioactive iodied, Until 1.0% of iodobutane contain radioactive iodine, the specific rotation of recovered iodobutane is found to be 15.58o, which statement is correct about above information?

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a

It has optical purity 96%

b

% of R in solution is 99%

c

Racemic mixture is 2%

d

Final solution is dextrorotatory

answer is B, C.

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Detailed Solution

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% R = 100 - 15.5815.9= 99%

% Racemic mixture = 15.9-15.5815.58×100=2%

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