Question

Please answer it fast!!! It's very urgent !!!! Calculate the molarity of NaOH in the solution prepared by dissolving its 20 g in enough water to form 500 ml of the solution.

Answer 1

Here you go

Formula for molarity = $\frac{No.\:\:of\:\:moles\:\:solute}{Vol.\:\:of\:\:solution\:\: in\:\: liters}$

Molar mass of NaOH = 40

No. of moles of NaOH = 20/40 = 0.5

Volume of solution = 500/1000 = 0.5 L

Molarity = 0.5/0.5 = 1 M

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