Dilutions Worksheet With Answers (Page 2 of 2) in pdf

Dilutions Worksheet With Answers Page 2

Dilutions Worksheet – Solutions

If 45 mL of water are added to 250 mL of a 0.75 M K

solution, what will the

molarity of the diluted solution be?

(0.75 M)(250 mL) = M

(295 mL)

= (0.75 M)(250 mL) = 0.64 M

(295 mL)

If water is added to 175 mL of a 0.45 M KOH solution until the volume is 250 mL, what

will the molarity of the diluted solution be?

(0.45 M)(175 mL) = M

(250 mL)

= (0.45 M)(175 mL) = 0.32 M

(250 mL)

How much 0.075 M NaCl solution can be made by diluting 450 mL of 9.0 M NaCl?

(9.0 M)(450 mL) = (0.075 M)V

= (9.0 M)(450 mL) = 54,000 mL = 54 L

(0.075 M)

If 550 mL of a 3.50 M KCl solution are set aside and allowed to evaporate until the

volume of the solution is 275 mL, what will the molarity of the solution be?

(3.50 M)(550 mL) = M

(275 mL)

= (3.50 M)(550 mL) = 7.0 M

(275 mL)

How much water would need to be added to 750 mL of a 2.8 M HCl solution to make a

1.0 M solution?

(2.8 M)(750 mL) = (1.0 M)V

= (2.8 M)(750 mL) = 2100 mL = 2.1 L

(1.0 M)

Dilutions Worksheet With Answers Page 2