Which of the following will be more soluble in an acidic solution than pure water?
Zn(OH)2
BaSO3
CsClO4
SrSO4
PbI2
I treid Zn(OH)2 and BaSO3 but that didnt work, even tried adding PbI2 to the list.
Please Help
Ans: Zn(OH)2, BaSO3, SrSO4 will be more soluble in an acidic solution than pure water.
Any base which accepts protons from acid in an acid solution is more soluble in acid than in water.
There are six strong acids, HClO4, H2SO4, HNO3, HI,HBr and HCl. They completely dissociate in water to ClO4-, HSO3-, HNO3-, Cl-, I- and Br- ions. Therefore, these six anions will not accept protons and their salts will not be more soluble in acid solution.
Hence,
1) Zn(OH)2 ---------> Zn+2 + 2OH-
OH- will accept protons in acid solution. Hence,Be(OH)2 is more soluble in acid solution.
2) BaSO3 ---------------> Ba2+ + SO32-
SO32- will accept protons in acid solution. Hence, BaSO3 will be more soluble in acid.
3) CsClO4 -----------> Cs+ + ClO4-
ClO4- will not accept protons in acid solution. Hence, CsClO4 will not be more soluble in acid.
4) SrSO4 --------------> Sr+2 + SO4-2
SO4-2 will accept protons in acid solution. Hence, SrSO4 is more soluble in acid solution.
5) PbI2 --------------.> Pb+2 + 2I-
I- will not accept protons in acid solution. Hence, PbI2 will not more soluble in acid solution.
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