Solutions Question 301

Question: A solution is prepared by dissolving 10gNaOH in 1250 mL of a solvent of density 0.8 g/mL. The molality of the solution in mol kg1 is

Options:

A) 0.25

B) 0.2

C) 0.008

D) 0.0064

Show Answer

Answer:

Correct Answer: A

Solution:

Given w= 10 g, Mol. mass =40 g Weight of solvent =1250×0.8g=10000g =1 kg
molality=1040×1=0.25m



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