Chemistry
Write a balanced equation for the reaction between aluminium oxide and sodium hydroxide solution.
Related Questions
The questions below refers to the following salt solutions listed A to F:
A: Copper nitrate
B: Iron [II] sulphate
C: Iron [III] chloride
D: Lead nitrate
E: Magnesium sulphate
F: Zinc chloride
(i) Which soln. becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it.
(ii) Which solution gives a white precipitate with excess ammonium hydroxide solution.
From the list of substances given — Ammonium sulphate, Lead carbonate, Chlorine, Copper nitrate, Ferrous sulphate — State a solution of the compound which gives a dirty green precipitate with sodium hydroxide.
Give one test to distinguish between the following:
Iron [III] chloride soln. and Copper chloride soln.
The salt which in soln. gives a pale green precipitate with NaOH solution and a white ppt. with BaCl2 soln. is :
- Iron [III] sulphate
- Iron [II] sulphate
- Iron [II] chloride
- Iron [III] chloride