Friday, 23 September 2011
Q3. An unknown green solution is heated with a piece of aluminium foil and
Sodium hydroxide solution.
i) The gas produced turns damp red litmus paper blue. Name the gas evolved.
Ans: The gas evolved is ammonia gas.
ii) This is a confirmatory test for an anion. Name this anion.
Ans: The ion is nitrate.
iii) Give a possible cation which gives the green solution.
Ans: Iron (II), Fe2+
Sodium hydroxide solution.
i) The gas produced turns damp red litmus paper blue. Name the gas evolved.
Ans: The gas evolved is ammonia gas.
ii) This is a confirmatory test for an anion. Name this anion.
Ans: The ion is nitrate.
iii) Give a possible cation which gives the green solution.
Ans: Iron (II), Fe2+
what we could have been, 06:13.
