Question

Calculate the molality of 1 molar solution of NaOH given density of solution is 1.04 gram/ml

Answer 1

Answer:

The molal concentration is 1 mol/kg.

Explanation:

Assume you have 1 L of the solution. Then you have 1 mol (40 g) of

NaOH

.

The density of the solution is 1.04 g/mL.

Mass of solution

=

1000

mL solution

×

1.04 g solution

1

mL solution

=

1040 g solution

Mass of water

=

(1040 - 40) g = 1000 g = 1.0 kg

b

=

moles of solute

kilograms of solvent

=

1 mol

1.0 kg

=

1 mol/kg

The molal concentration is 1 mol/kg.

pls mark me as brainlist

Answer 2

Answer:

Calculate the molality of 1 M solution of NaOH. Density of solution is 1.04 gm/ml