Chemistry
Give the balanced chemical equations for the following reactions:
(a) Potassium sulphate from potassium hydroxide and sulphuric acid.
(b) Barium sulphate from barium chloride and sodium sulphate.
(c) Copper sulphate from copper and concentrated sulphuric acid.
Related Questions
(a) State why ethyne burns in oxygen with a sooty flame?
(b) Write the balanced chemical equation when water is added to calcium carbide.
Name the gas evolved in the following reactions:
(a) when calcium carbide is hydrolysed.
(b) when ethene undergoes hydrogenation.
State one relevant observation for each of the following.
(a) Dilute hydrochloric acid is added to sodium thiosulphate.
(b) Mixture of ammonium chloride and sodium hydroxide is heated.
(c) Burning of ammonia in air.
(a) Propane burns in air according to the following equation.
C3H8 + 5O2 ⟶ 3CO2 + 4H2O
What volume of propane is consumed on using 1000 cm3 of air, considering only 40% of air contains oxygen?
(b) Calculate the gram molecular mass of N2, if 360 cm3 at S.T.P. weighs 0.45 g.