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Vivien C.

asked • 10/14/20

Standard solution, working out concentration

Hi,

So In a practical I used 325mg of a solvent and I dissolved this in water to make it up to 25ml.

Now I have to work out the exact concentration of my ''stock'' solution in mg/l


is it 0.013 mg/l...?


Thank you for helping.

1 Expert Answer

By:

Vivien C.

Yes, sorry I meant solute. Thank you. My confusion was because it asked it in mg/l so that would be 13000mg/l then.
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10/14/20

J.R. S.

tutor
Yes, it would be 13,000 mg/L
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10/14/20

Vivien C.

Furthermore, If It asks me to dilute my standard solution to make 4 other known concentrations by repeating 1ml samples of each would I take 0.1ml of my stock and fill with 0.9ml distilled water? And to work out the new concentration (C2) of my first dilution I would use 25ml= V1 C1=13mg/ml and V2=0.1ml?
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10/14/20

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