A 500 ml of naoh aqueous solution was prepared by dissolving 10.0 grams of naoh pellets in di water using a 500 ml volumetric flask. what is the molarity of the naoh solution?

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Chemistry

Sheldon Cunningham

4 October, 18:14

A 500 ml of naoh aqueous solution was prepared by dissolving 10.0 grams of naoh pellets in di water using a 500 ml volumetric flask. what is the molarity of the naoh solution?

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Nasir Davis · Answer 1

Answer is: molarity of solution is 0,5 mol/dm³.

m (NaOH) = 10,0 g.

V (NaOH) = 500 ml = 0,5 dm³.

c (NaOH) = ?

n (NaOH) = m (NaOH) : M (NaOH).

n (NaOH) = 10,0 g : 40 g/mol.

n (NaOH) = 0,25 mol.

c (NaOH) = n (NaOH) : V (NaOH).

c (NaOH) = 0,25 mol : 0,5 dm³.

c (NaOH) = 0,5 mol/dm³.