Practical investigations
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When making a standard solution of vitamin C, what weight of ascorbic acid is used for a 500 cm3 volumetric flask?
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Corrie writes.......
It depends on the concentration you want to make up!
Whatever the mass you would need for 1 dm3 of solution, you will need half as much if you are making up 500 cm3 (0.5 dm3) of solution.
Let's say you want to make up a solution with a concentration of 0.01 mol dm-3. Then you would need 0.005 mol of ascorbic acid to make up 500 cm3 of solution. The mass needed would be 0.005 x (mass of 1 mol ascorbic acid).
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updated: 28 March 2008
