Question

You combine 2ml of .5M NaOH with 10mls of water to generate a .1M NaOH solution. What is the final volume of this solution?

Answer 1

This can be calculated by the formula N1V1 = N2V2 where N1 = concentration of initial solution, V1 = volume of initial solution, N2 = concentration of final solution and V2 = Volume of final solution.

Here

N1 = 0.5 M

V1 = 2 ml

N2 = 0.1 M

Thus V2 = 0.5 X 2/ 0.1 = 10

Hence you will use only 8 ml of water to dilute the initial solution to get 0.1 M solution and the volume of final solution will be 10 ml.