Question

What volume of solution is needed to prepare a 0.50M solution of sodium hydroxide using 2.0 g of solute? Show your work

Answer 1

Answer:

0.10 L

Explanation:

First we convert the 2.0 grams of solute (meaning sodium hydroxide) into moles, using its molar mass:

• 2.0 g ÷ 40 g/mol = 0.05 mol NaOH

Then we can calculate the required volume of solution, using the definition of molarity:

• Molarity = moles / liters

• liters = moles / molarity

• 0.05 mol / 0.50 M = 0.10 L