# A stock solution contains 51.24 g of barium hydroxide in 1.20 L of solution. How do I make 1.00 L of 0.100 mol/L barium hydroxide from the stock solution?

##### 1 Answer

Sep 15, 2014

You must dilute 401 mL with enough water to make 1.00 L of solution.

**Step 1.** Calculate the molarity of the stock solution.

Moles of Ba(OH)₂ =

Molarity =

**Step 2.** Calculate the volume of stock solution that is needed.

See How do you do dilution calculations?

So, to make your solution, you would dilute 401 mL of stock solution with enough water to make 1.00 L.