Q.
Molality of 10 grams of aqueous solution containing 2 grams of caustic soda is
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a
5 m
b
7.2 m
c
6.25 m
d
4.2 m
answer is C.
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Detailed Solution
Wsolute=2 g; GMW of solute=40 g; Wsolution=10 g; Wsolvent=10-2g; m=240×10008=6.25m
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