Match columns A and B.
B (a) yellow
(b) green
(i) Copper(II) carbonate
(ii) Ammonium chloride
(iii) Lead iodide
(iv) Copper(II) oxide
(c) black
(d) white
Answers
Answer:
a) yellow - lead iodide
b)green- copper (ll) carbonate
c(black- copper (ll) oxide
d)white- Ammonium chloride
Answer:
a) yellow - lead iodide
b) green - copper carbonate
c) black - copper oxide
d) white - Ammonia chloride
Explanation:
a) yellow - lead iodide --
The lead halides are insoluble in water, so lead iodide will be precipitated. So, the name of the compound precipitated is lead iodide and it is a yellow colour precipitate.
b) green - copper carbonate--
Copper carbonate is green and copper oxide is black. You can see a colour change from green to black during the reaction. The carbon dioxide produced can be detected using limewater, which turns milky.
c) black - copper oxide
Copper carbonate is green and copper oxide is black. You can see a colour change from green to black during the reaction. The carbon dioxide produced can be detected using limewater, which turns milky.
d) white - Ammonia chloride
The chemical formula of ammonium chloride is NH4Cl. It is a crystalline solid. It is a salt that is available as a white powder. Therefore, the colour of ammonium chloride is white.