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Question

What is the molality of solution containing 24.5% of H2SO4 by mass? The density of solution is 1.093 g/mL

A
2.90 m
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B
2.73 m
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C
3.01 m
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D
3.31 m
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Solution

The correct option is D 3.31 m
24.5% of H2SO4=24.5gm of H2SO4 in 100gm of H2O .
Number of moles of H2SO4=24.598=0.25 mol
Weight of solvent= 10024.5=75.5×103kg .
Molality= 0.2575.5×103=3.31m .

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