Question

At STP, how many liters of oxygen are required to react completely with 3.6 liters of hydrogen to form water?

2 H2(g) + O2(g) → 2 H2O(g)

Answer 1

To react completely with 3.6 liters of hydrogen at STP, 1.8 liters of oxygen is required, according to the stoichiometric ratio from the balanced equation for the reaction between hydrogen and oxygen to form water.

Step-by-step explanation:

At STP (Standard Temperature and Pressure), the reaction between hydrogen and oxygen to form water is described by the balanced chemical equation: 2 H₂(g) + O₂(g) → 2 H₂O(g). This tells us that two volumes of hydrogen react with one volume of oxygen to produce two volumes of water vapor. Therefore, to react completely with 3.6 liters of hydrogen, we need half that volume in oxygen, because the molar ratio of hydrogen to oxygen is 2:1. So, the volume of oxygen required is 1.8 liters at STP.