4/14 HW ANSWERS – Dilutions and Titrations

1. What volume of 12.0 M hydrochloric acid stock solution is needed to make 24.0 mL of 0.1 M solution?

0.2 mL

2. How many milliliters of 14.0 M stock solution are needed to dilute the solution to 125 mL of 0.3 M?

3 mL

3. What volume of 13.5 M sulfuric acid must be used to prepare 1.5 L of a 0.25 M sulfuric acid solution?

0.028 L

4. How many mL of 0.200 M KOH will exactly neutralize 15.0 mL of 0.400 M H₂SO₄?

60.0 mL KOH

5. How many mL of 0.0947 M NaOH are needed to neutralize 21.4 mL of 0.106 M HCl?

24.0 mL NaOH

6. If 26.4 mL of LiOH solution are required to neutralize 21.7 mL of 0.500 M HBr, what is the concentration of the basic solution?

0.411 M LiOH

7. If 23.4 mL of 0.551 M NaOH is used to titrate 50.0 mL of HCl to the endpoint, what is the concentration of the HCl solution?

0.258 M HCl

8. What is the concentration of a solution of NaOH if 21.2 mL of a 0.0800 M solution of HCl are needed to neutralize 25.0 mL of the base?

0.0678 M NaOH