Section 1: Dilution and Concentration of Liquids
Liquids/solutions do not tend to come in the concentration that you want to use. You must therefore know how to calculate the concentration of liquids/solutions after they have been diluted or concentrated and you must also know HOW to dilute or concentrate solutions.
If 500 ml of a 75 % w/v aqueous solution of Sucrose are diluted to 1500 ml, what will be the new % w/v concentration of the Sucrose solution?
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On the next screen, you will be shown two approaches for solving such calculations. Both approaches use the fact that the amount of a component in the system IS THE SAME before and after dilution.