The limiting reagent in the reaction is

Regarding the theoretical yield based on the limiting reagent,
mol of SO can
be formed, which corresponds to a mass of
The excess reagent was
, and after the limiting reagent is consumed during the
reaction, the mass of excess reagent remaining will be

The limiting reagent in the reaction is the reactant that is completely consumed and determines the maximum amount of product that can be formed.

Regarding the theoretical yield based on the limiting reagent, the amount of product that can be formed is calculated using the stoichiometry of the reaction. This theoretical yield is the maximum amount of product that can be obtained under ideal conditions.

The excess reagent is the reactant that is not completely consumed in the reaction and is in excess of the amount needed to react with the limiting reagent.

After the limiting reagent is consumed during the reaction, the mass of excess reagent remaining will depend on the stoichiometry of the reaction and the initial amounts of reactants used. This can be calculated by subtracting the amount of excess reagent reacted with the limiting reagent from the initial amount of excess reagent added to the reaction.