Question

In a school’s laboratory, students require 50.0 mL of 2.50 M H2SO4 for an experiment, but the only available stock solution of the acid has a concentration of 18.0 M. What volume of the stock solution would they use to make the required solution?
Use M subscript i V subscript i equals M subscript f V subscript f..
0.900 mL
1.11 mL
6.94 mL
7.20 mL

Answer 1

Use MiVi = MfVf.

Vi = (Mf Vf) / Mi = (2.50 M × 50.0 mL) / 18.0 M = 125 / 18 = 6.94 mL.

Answer: 6.94 mL.