Some Basic Concepts Of Chemistry Question 33

Question: The density of 3M solution of sodium chloride is 1.252gmL1 . The molality of the solution will be (molar mass, NaCl=585gmol1 )

Options:

A) 2.60 m

B) 2.18 m

C) 2.79 m

D) 3.00 m

Show Answer

Answer:

Correct Answer: C

Solution:

[c] The relation between molarity (M) and molality (m) is d=M(1m+M21000).

M2 = Mol. mass of solute On putting value 1.252=3(1m+58.81000) on solving m= 2.79



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक