Answer to Question #116251 in General Chemistry for S

Question

What volume (in mL) of water would have to be added to 150.0 mL of 0.450 M potassium chloride, KCl, to give a solution with a concentration of 0.100 M?

Answer 1

Product of concentration*volume is constant, because number of moles of KCl is the same.

The new volume of solution will be 150.0 mL * 0.450 M / 0.100 M = 675.0 mL.

Volume of water to be added is 675.0 - 150.0 = 525.0 mL.

Answer: 525.0 mL.