State one relevant observation for each of the following reactions:
The addition of ethyl alcohol to acetic acid in the presence of concentrated Sulphuric acid.
State one relevant observation for each of the following reactions:
The action of dilute Hydrochloric acid on iron (II) sulphide.
Dilute hydrochloric acid decomposes iron(II) sulphide to produce iron(II) chloride and hydrogen sulphide having rotten egg smell.
FeS + 2HCl → FeCl2 + H2S
State one relevant observation for each of the following reactions:
The action of Sodium hydroxide solution on ferrous sulphate solution.
State one relevant observation for each of the following reactions:
Burning of ammonia in air.
State one relevant observation for each of the following reactions:
Action of concentrated Sulphuric acid on hydrated copper sulphate
Select the process from the following which matches the given description.
(calcination, roasting, pulverisation, smelting)
Crushing of the ore into a fine powder.
Select the process from the following which matches the given description.
(calcination, roasting, pulverisation, smelting)
Heating of the ore in the absence of air to a high temperature.