Question

At 500.K and 1.00 atm pressure, 1.5 liters of pentane gas, C5H12, is mixed with 15 liters of oxygen gas. A complete combustion results. How many liters of WATER vapor, measured at the same temperature and pressure, would be produced after the reaction?

Answer 1

Answer:

1.5 litre of C5H12 produce 9 litre of water vapour;

Explanation:

First balance the combustion reaction;

$C_5H_12 +8O_2$ → $5CO_2 +6H_2O$

from the balance reacion it is clearly that,

one mole of C5H12 reacts completely with 8 mole of O2 gas;

Hence

one litre of C5H12 reacts completely with 8 litre of O2 gas;

there fore 1.5 litre C5H12 needs 12 litre oxygen gas but we have 15 litre.

so,

C5H12 is a limiing reactant and O2 is a excess reactant.

so quantity of H2O depends on limiting reactant;

one litre of C5H12 produce 6 litre of water vapour;

therefore,

1.5 litre of C5H12 produce 9 litre of water vapour;