What volume of oxygen would be required to burn completely 400 ml of acetylene [C₂H₂]? Also calculate the volume of carbon dioxide formed.

2C₂H₂ + 5O₂ ⟶ 4CO₂ + 2H₂O (l)

112 cm³ of H₂S (g) is mixed with 120 cm³ of Cl₂ (g) at STP to produce HCl (g) and sulphur (s). Write a balanced equation for this reaction and calculate

(i) the volume of gaseous product formed

(ii) composition of the resulting mixture

What volume of oxygen at STP is required to affect the combustion of 11 litres of ethylene [C₂H₄] at 273°C and 380 mm of Hg pressure?

C₂H₄ + 3O₂ ⟶ 2CO₂ + 2H₂O

Calculate the volume of HCl gas formed and chlorine gas required when 40 ml of methane reacts completely with chlorine at STP.

CH₄ + 2Cl₂ ⟶ CH₂Cl₂ + 2HCl