Chemistry
Write balanced chemical equations for the following reactions:
(a) Ammonium chloride reacts with calcium hydroxide.
(b) Nitric acid reacts with zinc carbonate.
(c) Concentrated sulphuric acid is added to hydrated copper sulphate.
Related Questions
Give reasons:
(a) When ammonia gas is passed over black copper oxide in a combustion tube a reddish-brown substance is left behind.
(b) Quick lime is not used to dry hydrogen chloride gas.
The electron affinity of an element X is greater than that of element Y.
(a) How is the oxidising power of X likely to compare with that of Y?
(b) How is the electronegativity of X likely to compare with that of Y?
(c) State whether X is likely to be placed to the left or to the right of Y in the periodic table?
Name the main metal present in the following alloys:
(a) Duralumin
(b) Brass
Write balanced chemical equations for the following:
(a) Laboratory preparation of hydrochloric acid from a less volatile acid.
(b) Bromine gas is passed over ethene in the presence of carbon tetrachloride.