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For 'invert sugar', the correct statemen...

For 'invert sugar', the correct statement(s) is (are) (Given: specific rotations of (+) sucrose, (+) maltose, L-(-)-glucose and L-(+) - fructose. in aqueous solution are `+66^(@)`, `+140^(@)`, `-52^(@)` and `+92^(@)`, respectively

A

invert sugar' is prepared by acid catalyzed hydrolysis of maltose

B

invert sugar’is an equimolar mixture of D-(+) glucose and D-(-)-fructose

C

specific rotation of invert sugar is `-20^(@)`.

D

on reaction with `Br_2` water, 'invert sugar' forms saccharic acid as one of the products.

Text Solution

Verified by Experts

The correct Answer is:
B, C
Invert sugar is an equimolar mixture of D(+) glucose `(alpha = + 52^(@))` and D(-) fructose `(alpha = 92^(@))` .
Speific rotation is given by `[alpha]=(alpha)/(c.l)`.
where ` alpha` is the observed rotation , c is the concentration of the solution is g `mLl^(-)` and l is the length of the cell in decimeter. so the specific rotation of the mixutre `=[alpha]_("mix") = 0.5 xx (52) + 0.5 xx (-92) = -20^(@)`
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