pls help!! this is for my lab report! i'll appreciate your time and effort!
2006-07-20 02:57:16 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
The solution should be acidified with NO3- to allow for freeing of ions so that when the Ag is introduced it is buffered into binding to the halides while the previously basic salts (the part bonded to the halide originally) binds to the NO3- and stay in solution... The AgX (silver halides) will all precipitate out of solution as their Ksp's are very unfavourable toward solution.
2006-07-20 03:19:44 · answer #1 · answered by piercesk1 4 · 4⤊ 1⤋
In plainer human English it is to ionize and hence remove impure anions like sulpides and carbonates that intefere with test since conc. nitric acid is a strong oxidising agent:
SO3 + HNO3 = SO2 + blablah
CO3 + HNO3 = CO2 + blablah
2006-07-20 10:50:52 · answer #2 · answered by life_boat 2 · 0⤊ 0⤋
you need to add the acid to free up the ions so it's more favorable for them to react
2006-07-20 13:53:07 · answer #3 · answered by shiara_blade 6 · 0⤊ 0⤋