2h2 + o2 → 2h2o

how many moles of oxygen (o2) are required to react completely with 1.67 mol h2?

Answer : The number of moles of required are 0.835 moles.

Explanation : Given,

Moles of = 1.67 moles

The given balanced chemical reaction is,

By the stoichiometry we can say that, 2 moles of hydrogen gas react with 1 mole of oxygen gas to give 2 moles of water as a product.

From the balanced reaction we conclude that,

As, 2 moles of react with 1 mole of

So, 1.67 moles of react with mole of

Therefore, the number of moles of required are 0.835 moles.