Answer to Question #296407 in Inorganic Chemistry for Nancy

Question

If 2.5 mols of oxygen gas was available to react with excess hydrogen, how many grams of water would be produced?

2H₂ + O₂ --> 2 H₂O

Answer 1

• Oxygen is the limiting reactant so we can use the mole ratio of oxygen and that of water to get the moles of water then we convert to mass.
• Mole ratio Oxygen: Water is 1:2
• If 2.5 moles are ratio 1, ratio 2 will be 5 moles.
• 18g make one mole, what about 5 moles.
• We will multiply 5 by 18 which gives 90grams