Calculate the molarity of a solution prepared by dissolving 11.5 g naoh in enough water to make 1.5 l of solution.

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06-05-2017
Chemistry

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Calculate the molarity of a solution prepared by dissolving 11.5 g naoh in enough water to make 1.5 l of solution.

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Willchemistry Willchemistry · Answer 1 · 2017-05-12T00:36:26+02:00

Willchemistry Willchemistry

12-05-2017

Molar mass NaOH = 39.997 g/mol

Number of moles :

n = mass of solute / molar mass

n = 11.5 / 39.997

n = 0.287 moles

Therefore :

Molarity = moles solute / volume

Molarity = 0.287 / 1.5 => 0.1913 M

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