Homework Help: Chemistry

Posted by Paul on Sunday, March 20, 2011 at 11:29am.

The maximum solubility of silver sulfate, Ag2SO4 [molar mass = 312], is 4.50 g/L at 25蚓. Silver sulfate dissociates by the reaction below:

Ag2SO4(s) <--> 2 Ag+ (aq)+ SO4租 (aq)

1.What are the [Ag+] and [SO4租] in a saturated solution of silver sulfate made by dissolving excess solid in distilled water at 25蚓?

2.Write the Ksp expression for silver sulfate and calculate its value at 25蚓.

3.Will precipitation of silver sulfate occur if 0.100 mol of silver ions are added to 2500.0 ml of 0.100M sulfuric acid, H2SO4 ? Show calculations to support your conclusion.

Chemistry - DrBob222, Sunday, March 20, 2011 at 1:25pm
1. Convert solubility in g/L to moles/L for Ag2SO4. Then (SO4^-) = (Ag2SO4) and (Ag^+) will be 2x that.

2. Ksp = (Ag^+)^2(SO4^-2)

3. Calculate Qsp and compare to Ksp.
Post your work if you get stuck.

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