Question: how many liters of oxygen are required to produce 2 liters of water at stp?
Answer: Explanation: Know that one mole of any gas at STP takes up 22.4 liters. So 2.4 L of hydrogen is 0.107142857molsH2 . Since H2 reacts with O2 in a 2:1 ratio, to completely react the two you will need half as much oxygen as hydrogen.