The density of a 50% solution of naoh is 1.525 g/ml. what volume of a solution that is 50% by weight naoh is required to make 0.4 liter of 0.1m naoh solution?

The volume of NaOH required to make 0.4 L of 0.1 M solution is 2.09 ml.

Explanation:

Let us assume the 50% of the solution to be by volume.

Molarity of solution = 0.1 M

O.1 M solution means, 0.1 moles of solute in 1L of solution.

Moles of NaOH in 0.4 L solution = 0.1 0.4

Moles of NaOH = 0.04

Density =

Mass of  1 ml of 50% NaOH solution =

Mass of 1 ml 50% NaOH solution = 1.525 1

Mass of 1 ml of 50% NaOH solution = 0.7625 g

Moles of NaOH in 1 ml of 50% NaOH solution =

Moles of NaOH in 1ml of 50% NaOH solution = 0.01906 moles/liters

Molarity =

Volume =

Volume of NaOH = ml

Volume of NaOH = 2.09 ml

The volume of NaOH required to make 0.4 L of 0.1 M solution is 2.09 ml.

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