Calculate the number of mL of 8.0M CuSO4 solution that must be diluted to prepare 12 mL of 2.0M CuSO4 solution.

Question

b.) Calculate the number of mL of 7.5 M CuSO4 solution that must be diluted to prepare 25 mL of 1.35M CuSO4 solution.

Answer 1

Simply use V1M1 = V2M2

V1 = initial volume = x

M1 = initial concentration = 7.5 M

V2 = final volume = 25 ml

M2 = final concentration = 1.35 M

(x ml)(7.5 M) = (25 ml)(1.35 M)

x = 4.5 mls of 7.5 M CuSO4 should be used