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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: Chester on January 18, 2015, 06:04:50 PM

Title: Ag+ mass? Solubility
Post by: Chester 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 ºC).

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?

Title: Re: Ag+ mass? Solubility
Post by: Chester 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.

Title: Re: Ag+ mass? Solubility
Post by: Borek 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.

Title: Re: Ag+ mass? Solubility
Post by: Chester 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!