InterviewSolution
Saved Bookmarks
| 1. |
State two relevant observations for each of the following: 1. Ammonium hydroxide solution is added to copper(II) nitrate solution in small quantities and then in excess. 2. Ammonium hydroxide solution is added to zinc nitrate solution in minimum quantities and then in excess. 3. Lead nitrate crystals are heated in a hard glass test tube. |
|
Answer» 1. (a) When NH4OH is added to copper (II) nitrate solution in small quantities then a pale blue ppt. is observed. (b) When added in excess it disolves to give an inky blue solution forming a complex salt. 2. (a) When added in small quantities is forms a gelatinous white ppt. (b) When added in excess it dissolves to form a complex salt. 3. (a) Reddish brown gas is evolved. (b) Colourless, odourless gas evolved which rekindles a glowing splinter |
|