Answer:
3 Litres.
Explanation:
The balance equation of reaction is written in equation (1) below;
4H2 (g) + CS2(g) -------------> CH4 (g) + 2H2S (g) ------------------------------(1).
(From the balanced equation above) one mole of methane, CH4 and two moles of Hydrogen Sulphide, H2S are being produced when one mole of carbon Sulphide, CS2 reacts with 4 moles of Hydrogen gas.
(Parameters given from the question): we have 36 litres of Hydrogen, H2 gas and 12 litres of carbon Sulphide, CS2 gas.
Therefore, 36 Litres of H2 would react completely with; 36 litres/ 4.
= 9 Litres of Carbon Sulphide.
LIMITING REAGENT: (The reagent that is totally consumed). Hydrogen gas, H2 is the limiting reactant since we have 12 litres of Carbon Sulphide, CS2.
EXCESS REAGENT: Carbon Sulphide.
Amount remaining= 12 Litres of CS2 - 9 litres that was reacted.
= 3 Litres.
