How many grams of NaOH (molar mass 40.0) are required to prepare 2.5L of 0.750 M...

Question

Question

How many grams of NaOH (molar mass 40.0) are required to prepare 2.5L of 0.750 M solution?

Answer 1

Answer #1

Given the volume of NaOH solution, V = 2.5 L

Concentration of NaOH solution, M = 0.750 M = 0.750 mol/L

Hence moles of NaOH in the solution = MxV = 0.750 mol/L x 2.5 L = 1.875 mol

Given the molar mass of NaOH = 40.0 g/mol

Hence mass of NaOH required = 1.875 mol x 40.0 g/mol = 75.0 g (answer)

Answer 2

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