Question

What is the % (w/w) of 2 M NaOH solution having
density 1 g/ml at a particular temperature?

Answer 1

Answer:

ANSWER

It is given that the density of the solution is 1.110 g mL−1. 

The concentration of sodium hydroxide solution is 3.0 molal.

This implies 1000 g of water has 3 moles of NaOH.

3 moles of NaOH =3×40=120 g of NaOH

Mass of solution =1000+120=1120 g

Volume of solution =DensityMass=1.111120=1009 mL

Molarity =Volume in LNumber of moles=100010093=2.97 M

Hence, the molarity of the solution is 2.97 M.

Explanation:

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