The amount of product formed in a reaction is directly proportional to which of the following?

The amount of product formed in a chemical reaction is directly related to the amount of limiting reactant present. The limiting reactant is the substance that is completely consumed first in a chemical reaction, thus determining how much product can be generated. Once the limiting reactant is used up, the reaction cannot proceed further, regardless of the quantities of other reactants present.

For example, if you have a chemical reaction that requires two reactants to produce a product, and one of the reactants is present in a smaller amount than needed (the limiting reactant), the reaction will stop when that reactant is finished, resulting in a certain amount of product being formed. The amount of any excess reactant does not affect the total amount of product produced, as it will still be in excess after the limiting reactant is depleted.

The other options refer to aspects of the reaction that do not directly influence the quantity of product formed in the same manner. The total mass of reactants may provide a sense of the reaction scale but does not account for stoichiometry. Excess reactants indicate that there is leftover material but do not limit the product formed. While temperature can affect the rate of a reaction and the equilibrium position, it does not change the fundamental sto