What volume of 2.50 x 10-4 M CV+ solution should be diluted to 10.0 mL to prepare a 7.50 x 10-5 M CV+ solution

Question

Answer

1.00 mL

3.00 mL

5.00 mL

7.50 mL

33.3 mL

Answer 1

Given:
C1 = 2.5x10^-4 M
C2 = 7.4x10^-5 M
V2 = 10.0 mL

Use conservation of (mole) amount:
C1 V1 = C2 V2

Rearrange to find the initial volume (V1).