How do we specify a concentration, given $0.02*mol$ of calcium chloride dissolved in a volume of water?

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Answer 1 · 2017-07-29T06:40:42

This question is ill-proposed...........

I could have a $1*L$ volume of $0.02*mol*L^-1$ of $CaCl_2$ containing $0.02*mol$ $CaCl_2$ ;

I could have a $10*L$ volume of $0.02*mol*L^-1$ of $CaCl_2$ containing $0.2*mol$ of $CaCl_2$ ;

I could have a $100*L$ volume of $0.02*mol*L^-1$ of $CaCl_2$ containing $2.0*mol$ of $CaCl_2$ .

Can you work out the MASS of solute in each solution?

When we specify a concentration we refer to the quotient.......

$"Moles of solute"/"Volume of solution"$ , and thus $"concentration"$ typically has the units $mol*L^-1$ .

How do we specify a concentration, given 0.02*mol0.02*mol of calcium chloride dissolved in a volume of water?