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Topic: help calculating the concentration  (Read 2230 times)

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Offline haber101

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help calculating the concentration
« on: June 09, 2010, 06:51:05 PM »
Benedict's solution is made in the following way
       173 grams of sodium citrate
       100 grams of sodium carbonate in 800 mL of water
       17.3 g of cupric sulphate pentahydrate in 100 mL of water
       Dilute to 1000 mL.
 
       Calculate the concentration of the following in this solution.
       a) sodium citrate
       b) sodium carbonate
       c) cupric sulphate

i have calculated the molar mass of the three but how do i calculate the concentration?

Offline opti384

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Re: help calculating the concentration
« Reply #1 on: June 09, 2010, 09:55:31 PM »
Which concentration are you asking about? Molar, molal or weight percent? But in this case since it gives the volume of the solvent, probably it's asking for the molar concentration which is (the mol of the solute)/(the volume of the solvent)

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