What is the molarity of a solution made by dissolving 68.4 g of NaOH in enough water to produce a 875mL solution?

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Chemistry

Lucifer

1 December, 15:56

What is the molarity of a solution made by dissolving 68.4 g of NaOH in enough water to produce a 875mL solution?

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Kaylin Dodson · Answer 1

Answer is: molarity of sodium hydroxide solution is 1.95 M.

m (NaOH) = 68.4 g.

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

n (NaOH) = 68.4 g : 40 g/mol.

n (NaOH) = 1.71 mol.

V (NaOH) = 875 mL : 1000 mL/L = 0.875 L.

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

c (NaOH) = 1.71 mol : 0.875 L.

c (NaOH) = 1.954 mol/L.