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
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