State the effect of adding a small amount of a] sodium hydroxide b] ammonium hydroxide followed by an excess in each case to samples of each of the salt solutions:
Sodium nitrate solution and sodium chloride solution.

Q. State the effect of adding a small amount of: (a) sodium hydroxide (b) ammonium hydroxide followed by an excess in each case to samples of each of the salt solutions.
(i) calcium nitrate [small amount .......... in excess ..........].
(ii) zinc nitrate [small amount ........... in excess ............].
(iii) lead nitrate [small amount ........... in excess .........].

Q.

Copy and complete the following which summarizes the effect of adding a small amount of sodium hydroxide to salt solution followed by an excess of the reagent, and then adding ammonium hydroxide (ammonia solution) in a small amount followed by an excess to another sample of the salt solution.

Q.

Copy and complete the following which summarizes the effect of adding a small amount of sodium hydroxide to salt solution followed by an excess of the reagent, and then adding ammonium hydroxide (ammonia solution) in a small amount followed by an excess to another sample of the salt solution.

Q. Three test tubes contain calcium nitrate solution, zinc nitrate solution and lead nitrate solution respectively. Each solution is divided into two portions (i) and (ii). Describe the effect of
(i) adding sodium hydroxide solution to each portion in turn till it is in excess.
(ii) adding ammonium hydroxide to each portion in turn till it is in excess.

Q. (b) Classify the following solutions as acids, bases or salts. ​ Ammonium hydroxide, barium chloride, sodium chloride, sodium hydroxide, $H_{2}S{O}_4$ and $HN{O}_3$​