Soluble substances?!?!?

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Soluble substances?!?!?

Which of the following slightly soluble substances are more soluble in acidic solution: AgCl , AgCN , CaF2 ? Can you please explain why? Thank you very much

2007-07-05 08:13:41 · 2 answers · asked by Rnx 2 in Science & Mathematics ➔ Chemistry

2 answers

AgCl is not very soluble, because the imaginary reaction AgCl + H+ ===> Ag+ + "HCl" does not produce a slightly ionized substance. HCN and HF are only slightly ionized, however, so reaction with H+ would take CN- and F- "out" of solution.

2007-07-05 08:22:25 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋

Depends on the acid. [AgCl2]- is water-soluble, so is [Ag(CN)2)]-. Hot nitric acid can oxidize cyanide. Strong acid can shift the equilibrium for CaF2 and volatize HF.

2007-07-05 08:20:16 · answer #2 · answered by Uncle Al 5 · 0⤊ 0⤋