Question

Which statement is true about limiting reactants?

A The limiting reactant in a reaction is the first reactant to be completely converted to moles.
B. The limiting reactant in a reaction is the first reactant to be completely converted to products.
OC The limiting reactant in a reaction is the first reactant to be completely converted to energy
D. The limiting reactant in a reaction is the first reactant to be completely converted to heat.

Answer 1

Statement B is correct: The limiting reactant is the first reactant to be completely converted to products. Limiting reactants determine the amount of product formed and are identified by converting masses to moles to compare quantities per the reaction's stoichiometry.

Step-by-step explanation:

The correct statement about limiting reactants is: B. The limiting reactant in a reaction is the first reactant to be completely converted to products. In a chemical reaction, the limiting reactant is the substance that is totally consumed first and thus determines when the reaction stops. When you are determining the limiting reactant, it is necessary to convert the given quantities of each reactant to moles because this allows you to compare the reactants on an even basis, considering the reaction's stoichiometry.

By using either a mole-mass or mass-mass calculation, we can identify which reactant gives the lesser amount of product, and thus, is the limiting reagent. Whichever reactant provides the lesser amount of a particular product upon complete reaction will be deemed the limiting reactant. None of the reactants result in the creation of energy or heat as the direct product of the reaction; rather, they are transformed into products as dictated by the reaction equation.

Answer 2

The limiting reactant in a reaction is the first reactant to be completely converted to products.

Step-by-step explanation:

When we perform a reaction, it is not easy to measure the exact amount of the two reagents to make sure that both of them react completely. That's why typically we have a limiting reagent and a reagent in excess.

The limiting reagent is the one which determines the maximum amount of product formed, as when it's used up, the reaction stops and cannot proceed further, since the other reagent doesn't have anything to react with.

Simply speaking, the limiting reactant in a reaction is the first reactant to be completely converted to products.

The limiting reagent provides the information about the amount of the product formed, as opposed to the reagent in excess which doesn't provide any valuable information.