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Q.

The mole fraction of glucose (C6H12O6) in an aqueous binary solution is 0.1. The mass percentage of water in it, to the nearest integer, is

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a

92.00

b

32.00

c

47.00

d

52.00

answer is A.

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Detailed Solution

XC6H12O6=0.1 If the total mole is 1 mol, then the moles of glucose and water will each be 0.1 and 0.9, respectively. The mass percent of water is=(0.9 x 18)(0.1 x 180 + 0.9 x 18) x 100=47.36                                                       47 

Therefore, the correct option is A 47.00

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