In laboratory preparation of Hydrogen, H2S is removed from the obtained gas by passing it through:
Silver nitrate solution
Lead nitrate solution
Caustic potash Solution
Anhydrous Calcium chloride
The obtained gas is passed through the Lead Nitrate solution. Which reacts with H2S and forms the precipitate of lead sulphide and HNO3.
(b) From the list of substances given below, choose the pair required to prepare the salts (i) to (iii) in the laboratory and write down the relevant equations. The substances are
chlorine, iron, lead, lead nitrate solution, sodium nitrate solution, iron (III) carbonate, lead carbonate, iron (III) hydroxide, sodium hydroxide solution and dilute hydrochloric acid. The salts are
(i) sodium chloride.
(ii) lead chloride.
(iii) anhydrous iron (III) chloride.
Tap water is not used to prepare a solution of silver nitrate in the laboratory. Why?
What do you observe when
(a) Lead nitrate is heated.
(b) Chlorine water is exposed to sunlight.
(c) Hydrogen peroxide is exposed to sunlight.
(d) H2S gas is passed through copper sulphate solution.
(e) Barium chloride is added to sodium sulphate solution.