1) Give an anion that can be added in solution to separate:
(a) Na+(aq) from Ag+(aq)
(b) Na+(aq) from Ca2+(aq)
2) Write a balanced equation for each of the following double-displacement reactions. Include states:
(a) Aqueous solutions of chromium (III) iodide and sodium hydroxide react to give aqueous sodium iodide and a chromium (III) hydroxide precipitate.
(b) Aqueous solutions of nickel (II) sulfate and mercury (I) nitrate react to give aqueous nickel (II) nitrate and a mercury (I) sulfate precipitate.