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JEE Advanced levelSingle correct optionDifficulty 3 of 3bm051

Sucrose of mass 3.42 g (molar mass 342 g/mol) is completely hydrolysed. Using molar mass 180 g/mol for both glucose and fructose, the total mass of monosaccharides formed is

A3.60 g
B3.78 g
C1.80 g
D3.42 g

Answer: A

Moles of sucrose

= 3.42/342 = 0.0100

. Each mole gives one mole each of glucose and fructose, so mass

= 0.0100 \times 360 = 3.60

g. The extra 0.18 g is the water added in hydrolysis.

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