How many grams of water (H2O) will be produced from 96.0 grams of oxygen (O2)?

Answer 1

Hello, Cael,

We need to know what the oxygen reacts with to produce water. Any hydrocarbon could be used, although they also make CO₂. So I'll go with hydrogen - it's always a first choice, and no CO₂! We need a balanced equation:

2H₂ + 1O₂ = 2H₂O

We're given 96 grams of oxygen. We'll assume we have more than enough hydrogen.

96 grams of O₂, with a molar mass of 32 grams/mole, represents 3.0 moles of O₂. The equation states we should expect twice that number of moles of H₂O, or 6 moles of H₂O (The molar ratio of H₂O to O₂ is 2/1). Mutiply that by water's molar mass (18 grams/mole) to arrive at 108 grams of water.

Enjoy the splash, and the bang..

Bob