1. Ethene, C2H4, burns in oxygen according to the equation. In an experiment, 10cm3 of ethene was burnt in 50cm3 of oxygen.
C2H4 + 3O2 = 2CO2 + 2H2O
i) Calculate the volume of the oxygen gas remaining at the end of the reaction.
ii) Calculate the volume of carbon dioxide produced.
2. What volume(in cm3) of 0.100mol/dm3 copper(II) sulfate solution is required to react completely with a solution containing 0.0250 mol of sodium hydroxide?
CuSO4 + 2NaOH = Cu(OH)2 + Na2SO4
