Question

2H2O = 2H2+O2, How many moles of O2 will form when 1 mol of H2O reacts?

Answer 1

When 1 mole of water (H2O) reacts according to the balanced chemical equation, 0.5 moles of oxygen gas (O2) will be produced. This is determined by analyzing the stoichiometry of the reaction, which shows a 2:1 relationship between H2O and O2.

Step-by-step explanation:

The question asks about the amount of oxygen (O2) gas produced from the reaction of water (H2O). We rely on a balanced chemical equation to find the answer.

Here's the balanced equation:

2H2O → 2H2 + O2

To find moles of O2 formed when 1 mol of H2O reacts:

Since the reaction shows that from 2 moles of H2O, we get 1 mole of O2, we can set up a ratio:

2 mol H2O : 1 mol O2

Therefore, if we have 2 moles of H2O, we would get 1 mole of O2. But we only have 1 mole of H2O, which is half of what our balanced equation represents. Hence:

1 mol H2O : 0.5 mol O2

So, when 1 mole of water (H2O) reacts, it will produce 0.5 moles of oxygen gas (O2).

Answer 2

2H2O = 2H2+O2
from reaction 2 mol 1 mol
from problem 1 mol x mol

x=1*1/2= 0.5 mol O2 is formed when 1 mol of H2O reacts