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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