A. From the list of substances, choose those which meet the descriptions given in parts (i) to (v) below.
Iron, Iron (II) nitrate, nitric oxide, sulphur, aluminium nitride, carbon, conc. H2SO4 , Hydrogen chloride,
copper(II)oxide, sulphur dioxide, ammonia, water, carbon monoxide, iron(II)sulphate.
i) Two substances one of which is gaseous which react in the heated form to liberate nitrogen.
ii) Two substances one of which is gaseous which react to give iron(1) chloride.
iii) Two substances one of which is a neutral liquid which react to liberate acidic gas.
iv)Two substances one of which is a non-metal, which react to give two acidic gases, one of which is oxidized
product of the reaction.
v) Two substances one of which is gaseous which combine to give a brown addition product.