How many liters of oxygen are required to react completely with 1.2 liters of hydrogen to form water?
Under the same conditions a volume of
Under equivalent conditions, equal volumes of gases contain equal numbers of gaseous particles. We need 1 equiv
Without the pressure and temperature we cannot calculate this value.
However, if we assume this reaction is taking place at Standard Temperature and Pressure (STP) we can use Avogadro's constant of
The balanced equation for this reaction is
Now we can use the mole ratio to convert the values.