Page 1 of 1
Solubility and pH
Posted: Sat Dec 12, 2020 7:05 am
by Dhamnekar Winod
Which of the following insoluble salts AgCl,Ag
2CO
3,Ag
3PO
4and/orAgBr
📖-- will be substantially more
soluble in 1.0 M HNO
3 📖than in pure water?
My answer: CO₃²⁻ and PO₄³⁻ are conjugate bases of weak acids. and HNO
3 📖 is a strong acid. Answer provided is
Ag
2CO
3,Ag
3PO
4 📖.How is that?
Re: Solubility and pH
Posted: Sat Dec 12, 2020 1:23 pm
by ChenBeier
Silver carbonate will decompose in nitric acid. Silver nitrate and carbon dioxide will be obtained This has good solubility. Silver phosphate will in low pH got hydrogenphosphate and dihydrogenphosphate which is also better soluble.
Silver halogenides not soluble in acid.
Re: Solubility and pH
Posted: Sat Dec 12, 2020 6:41 pm
by Dhamnekar Winod
\(Ag_3PO_4 + HNO_3 \rightarrow AgNO_3 + Ag_2HPO_4\) Silver Hydrogen Phosphate will be formed.