Asked by walter

How many milliliters of water must be added to 153.2 mL of 2.73 M KOH to give a 1.68 M solution?
Answered by bobpursley
Lets see: you want to dilute it by 2.73/1.68 or 1.625 times.

Which means, you need one part KOH, and .625 parts diluting water.

So what is one part? Easy: 153.2 is one part, and then water of 153.2*.625 ml water. Stir, label, and store properly.
Answered by walter
using M1*V1=M2*V2

why does this not work?
Answered by DrBob222
It does and the answer is the same either way. However, I'm curious, if you knew the answer why did you ask? Or why not show your work and ask if that's the right way?
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