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Molality of 10 grams of aqueous solution containing  2 grams of caustic soda is

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5 m
7.2 m
6.25 m
4.2 m

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detailed solution

Correct option is C

Wsolute=2 g; GMW of solute=40 g; Wsolution=10 g; Wsolvent=10-2g; m=240×10008=6.25m

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Similar Questions

Match the items of Column I with Column II.

 Column I (Concentrations term) Column II (Factor on concentration term depends)
A.Molarityp.Dependent upon temperature
B.Molalityq.Not depend upon volume
C.Mass per centr.Depend upon volume of solution
D.Volume per cents.Depend upon moles of solute

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