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Question

Calculate Molality of a solution in which 36 gm glucose is dissolved in 500 gm water.


A

0.8

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B

0.4

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C

0.2

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D

0.36

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Solution

The correct option is B

0.4


From molality formula, we know
Molality = Moles of soluteMass solvent(kg)
Solute is glucose, whose molecular mass is 180.

M= (36X 1000)/180X 500= 0.4


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