Question

10 moles of hydrogen are allowed to react with 6 moles of oxygen. How much water will be obtained from reaction on complete consumption of one gas

Answer 1

Explanation:

2H2 +O2 ======> 2H2O. 2- moles of hydrogen reacts with 1- mole of oxygen to give 2- moles of water. So 4- moles of Oxygen will react with 8- moles of Hydrogen to form 4- moles of water.

Answer 2

Answer:

10 mole of water molecule will be obtained after complete reaction.

Explanation:

10 moles of hydrogen and 6 moles of oxygen are reacting together to give water.

A balanced chemical reaction of hydrogen and water is

$\[2{H_2} + {O_2} \to 2{H_2}O\]$

1 mole of oxygen is reacting with 2 moles of hydrogen.

6 moles of oxygen will react with 12 moles of hydrogen.

Therefore, hydrogen is a limiting reagent.

A limiting reagent is chemical species that are available in less amount and governs the reaction.

2 moles of hydrogen react with 1 mole of oxygen.

10 moles of hydrogen react with 5 moles of oxygen.

Now,

2 moles of hydrogen give 2 moles of water molecules.

10 moles of hydrogen give 10 moles of water molecules.

Therefore, 10 moles of water molecule will be obtained after a complete reaction.