Calculate the largest amount of H2O that could be produced.

Question

Hydrogen (H2) gas and oxygen (O2) gas react to form water H2O vapor. 

Suppose you have 1.0 mol of H2 and 5.0 mol of O2 in a reactor.

Calculate the largest amount of H2O that could be produced.

Round your answer to the nearest 0.1 mol

Answer 1

Hello, Yasmine,

We need a balanced equation to start.

I get 2H₂ + 1O₂ = 2H₂O

This tells us that we need 2 moles of H₂ for every 1 mole of O₂. Since we only have 1 mole of H₂, compared to the 5 moles of O₂, hydrogen is the limiting reagent. For illustration, divide the balanced equation by 2 in order to get 1 mole of H₂. If we start with 1.0 moles of H₂, we'll produce 1.0 mole of H₂O.

Bob