If I add 475mL of water to 75.0mL of a 0.315M NaOH solution, what will the molarity of the diluted solution be?

Question

Chemistry

Howard Peck

25 April, 05:40

If I add 475mL of water to 75.0mL of a 0.315M NaOH solution, what will the molarity of the diluted solution be?

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Dashawn Atkins · Answer 1

Answer is: the molarity of the diluted solution 0,043 M.

V (NaOH) = 75 mL : 1000 mL/L = 0,075 L.

c (NaOH) = 0,315 M = 0,315 mol/L.

n (NaOH) = c (NaOH) · V (NaOH).

n (NaOH) = 0,075 L · 0,315 mol/L.

n (NaOH) = 0,023625 mol.

V (solution) = 0,475 L + 0,75 L.

c (solution) = 0,023625 mol : 0,550 L.

c (solution) = 0,043 mol/L.