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Question

The mole fraction of solute in a solution is 0.3 . The mole percent of solvent is:

A
30
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B
70
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C
60
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D
40
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Solution

The correct option is B 70
Mole fraction of solvent =1 mole fraction of solute

=10.3=0.7

Mole percent =χa×100

Mole percent of solvent =0.7×100

So, mole percent is 70%.

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