# Molar Solutions - NaOH

Please show steps and provide a short explanation.

The formula weight of NaOH is 40.0.

1. How many grams of NaOH are needed to make 1M solution?

2. How many grams of NaOH are needed to make a 0.5M solution?

3. How many grams of NaOH are needed to make 0.25M solution?

4. How many grams of NaOH are needed to make 500mL of 1.0M solution?

5. How many grams of NaOH are needed to make 100mL of 1.0M solution?

6. How many grams of NaOH are needed to make 10mL of 0.2M solution?

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#### Solution Preview

Steps in finding the mass of solute needed to prepare a solution of certain molarity:

a) Solve for the mole of solute needed.

The following working equation is useful:

Molarity = M = mole solute / volume of solution in liter

Hence,

Mole solute = Molarity x volume of solution in liter

b) Compute for the mass in gram of the solute needed.

Mass of solute in gram = mole solute x molar mass of the solute

1. How many grams of NaOH are needed to make 1M solution?

Note: Since the volume of the solution to be prepared is not specified, let us assume a volume of 100 ...

#### Solution Summary

Molar solution NaOH are examined in the solution.