How do you calculate the number of moles of potassium hydroxide that must be dissolved to make the following solution: 500 cm^3 of 1 mol/dm^3?

1 Answer
Sep 20, 2016

We use the relationship, "Concentration" = "Moles of solute"/"Volume of solution". 0.500*mol KOH are required.

Explanation:

We are given that "Concentration" = 1*mol*dm^-3, and that the volume of this solution is 500*cm^3 = 0.500*dm^3.

Thus "moles of solute" = "concentration "xx" volume" = 1*mol*cancel(dm^-3)xx0.500*cancel(dm^3) = 0.500*mol.

What is the mass of the KOH used here?