What do we mean by percentage concentration?

1 Answer
anor277
Oct 1, 2016

You will have to qualify the terms of your question. I can make a guess, but I might be wrong.

Explanation:

In general, when we talk of solution concentration in percentages, we mean a percentage by mass, i.e.

"mass of solute"/"mass of solution"xx100% = ??%. Thus 20*g of solute in 80*g of solvent (which is typically water) has a concentration of 20%(m/m). These can be converted to concentrations with units of mol*L^-1 PROVIDED we have the density of the solution. Anyway, you will have to specify the terms of your concentration.

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