A volume of 50cm3 of oxygen was exploded in 50cm3 of carbon (II) oxide. What was the volume of the residual gas at room temperature.
First, we need to balance the chemical equation for the reaction between oxygen and carbon (II) oxide:
2O2 + 2CO -> 2CO2
This means that 2 volumes of oxygen react with 2 volumes of carbon (II) oxide to produce 2 volumes of carbon dioxide.
Since we started with 50cm3 of oxygen and 50cm3 of carbon (II) oxide, we have a total of 100cm3 of reactants. According to the balanced equation, all of the reactants will be used up and converted into products.
So, the total volume of gas produced will be 100cm3 of carbon dioxide.
Therefore, the volume of the residual gas at room temperature will be 100cm3.