Thursday
July 30, 2015

Homework Help: chemistry

Posted by molar solubility on Saturday, July 30, 2011 at 7:44pm.

What is the molar solubility of silver carbonate Ag2CO3 at 25 C if it is dissolved in a 0.15M solution of silver nitrate, AgNO3?

Solubility constant:
silver carbonate = 8.1 *10^(-12)

Answer: 3.6 *10^(-10)

So... not sure exactly what to do here.

AgCO3 + AgNO3 --><--
AgCO3 + Ag(+) + NO3(-) (?)

not sure what molarity has to do with this.

Any help would be appreciated.

Also

what is Ksp expression of mercury(I) chloride Hg2Cl2 in terms of molar solubility, s?

Answer: 4s^3

Why is this not s^2? I thought that mercury(I) was a diatomic and Cl2 had a -2 charge (and is also diatomic). That would mean
1 mercury(I)ion:1 chlorine ion or
s*s=s^2

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