F.4 Chemistry問題

1. Mix silver nitrate solution+nitric acid with NaCl, white precipitate(ppt) will be formed.
Others is colorless.

2. Add ammonia solution to copper(II) sulphate,
pale blue precipitate/ deep blue solution (when ammonia is in excess) will be formed.
Others no reaction.

For the remaining two, KNO3 can dissolve in water while CaCO3 cannot.

OR colorless gas bubbles(CO2) is formed when CaCO3 is mixed with any acid.
Others no reaction

2012-09-30 21:21:09 補充：
Do not use flame test because it is not considered as a chemical test!!!!

2012-10-02 11:23:20 補充：
I admit that my answer is not perfect.
Maybe you can tell us the correct answer.

You'll not get any marks if you answer in this manner.
The biggest problem is that, you DON'T KNOW which one is which before tests.
You cannot "add silver nitrate & acid to NaCl", 'coz you just don't know which one is which.

2012-10-02 02:59:36 補充：
You only know there're 4 unnamed white solids, but you don't know which one is NaCl (before test).
This is some logics.