Answer to Question #27257 in Chemistry for rita

Question

The phrase "nitrate form" means that all the sites in the resin
where ion exchange occurs are occupied by nitrate ions. By what
simple laboratory process can one convert a column to "nitrate
form?"

Why not? Think about what happens to the resin as it dries out.

The object in adding the solution in this careful way is to disturb
the resin bed as little as possible - why?

What is the chemical reaction for the photodecomposition
of AgCl(s)?

What color(s) would you expect the products of this
reaction to be?

Why not simply use de-ionized water for the rinse?

Seawater contains bicarbonate ion. What reaction would you
expect between Ba2+ ion and HCO3
(aq)? (Hint: which carbonates
are insoluble?) What reaction would you expect between a solution
of HNO3 and HCO3
-
(aq)? Do you see any fizzing? Based on your
answers to these two questions, suggest a reason why we acidify the
solution of Ba(NO3)
2.