Engineering
Chemistry
Carbohydrate
Stereoisomerism
Test of aldehydes
Question

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]

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

on reaction with Br2 water, 'invert sugar' forms saccharic acid as one of the products

specific rotation of 'invert sugar' is –20°

'invert sugar' is prepared by acid catalysed hydrolysis of maltose

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Solution

(B)        Invert sugar in an equimolar mixture of D(+) glucose and D(–) fructose.

(C)        specific rotation = 1×52º−1×92º2=−40º2  = –20º