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Topic: Ag+ mass? Solubility  (Read 2029 times)

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Offline Chester

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Ag+ mass? Solubility
« on: January 18, 2015, 06:04:50 PM »
Hello, I have a problem related to solubilities.

The solubility of Ag2CrO4 is 2,5 x 10 ^ (-2) g/L    (25 ÂșC).

Ag+ mass in the solution if:

- To 100 mL of Ag+, add solid CrO4 2- (Without volume variation) until the concentration of CrO4 2- is 0,020 mol/L.


I tried using IVE (Initial, Variation, Equilibrium concentrations) but that didn`t worked. Any ideas?

Offline Chester

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Re: Ag+ mass? Solubility
« Reply #1 on: January 18, 2015, 06:13:37 PM »
My result was 0,43 g of Ag+. I think it`s incorrect, it`s a very small value.

Offline Borek

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Re: Ag+ mass? Solubility
« Reply #2 on: January 19, 2015, 03:47:53 AM »
Actually 0.43 g is several orders of magnitude too large.

Hint: you should use the solubility data to find the solubility product.
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Offline Chester

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Re: Ag+ mass? Solubility
« Reply #3 on: January 21, 2015, 12:48:29 PM »
You were right, it is a large number xD

I have managed to solve the problem with the aid of my cousin. Thank you!

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