Chemistry: Molarity and Dilution

Front

When you make a dilution, which of these values remains constant?

• The molarity (M)
• The total moles of solute
• The volume (V)
• The concentration

Back

The total moles of solute

Front

How do we make a dilution?

Back

Add more solvent

Front

A solution that has water as the solvent is called a(n).....

Back

Aqueous Solution

Front

As we dilute a solution...

Back

The volume increases and the molarity (M) decreases

Front

Molarity of a solution containing 400 g of CuSO₄ (FM: 159.6 g/mol) in 4.0 L of solution?

Back

0.626 M

Front

How many moles of solute are present in 50.0 mL of 0.20M KNO₃?

Back

0.01 moles solute

Front

How many mL of stock solution of 2M NaCl do you need to prepare 100 mL of 0.150M NaCl?

Back

7.5 mL

Front

How many mL of 1.0M KBr solution would you need to prepare 250 mL of a 0.2M dilution?

Back

50 mL

Front

Molarity of solution from 10 mL of 13M stock to 300 mL?

Back

0.43M

Front

You are adding a chlorine solution to a swimming pool. The stock solution of chlorine is 1000M. Your swimming pool (75,000 L) needs to be at a concentration of 0.1M. How much of the stock solution should you add?

Back

7.5 L