gravimetric analysis q (1 Viewer)

[panikinprogress]

why who what when where how help thank you in advance

 

[carrotsss]

Silver nitrate is soluble, silver carbonate is soluble, silver sulfate is sparingly soluble and silver chloride is insoluble

 

[Luukas.2]

This is not a good question.

Silver carbonate has a K_sp of 10^-12, so it isn't soluble.

Usually precipitating silver chloride is a good strategy but an ammonium salt (weak acid) will add ammonia molecules to the system, and the equilibrium constant for the formation of [Ag(NH₃)₂]⁺ is about 10⁷.

(B) and (C) are clearly inappropriate and given barium carbonate is also insoluble, the best answer is (A), but the situation is not clear-cut. Choosing a chloride like NaCl would be way more appropriate.

 

[carrotsss]

This is not a good question.

Silver carbonate has a K_sp of 10^-12, so it isn't soluble.

Usually precipitating silver chloride is a good strategy but an ammonium salt (weak acid) will add ammonia molecules to the system, and the equilibrium constant for the formation of [Ag(NH₃)₂]⁺ is about 10⁷.

(B) and (C) are clearly inappropriate and given barium carbonate is also insoluble, the best answer is (A), but the situation is not clear-cut. Choosing a chloride like NaCl would be way more appropriate.

oh wait I just assumed it wasn’t without checking because that would make the answer weird, huh