What is the final volume of NaOH solution prepared from 100.0 mL of 0.500 M NaOH if you wanted the final concentration to be 0.150 M?

The final volume of NaOH solution is 30ml

Explanation:

We all know that

V1S1 = V2S2

or V1 = V2S2:S1

or V1 = V2*S2*1/S1

or V1=100*0.15*1/0.50

V1 = 30

∴30 ml NaOH solution is required to prepare 0.15 M from 100ml 0.50 M NaOH solution.