If chlorine bleach is mixed with other cleaning products...

If chlorine bleach is mixed with other cleaning products containing ammonia, the toxic gas $\mathrm{NCl}_{3}(g)$ can form according to the equation $$3 \mathrm{NaClO}(a q)+\mathrm{NH}_{3}(a q) \longrightarrow 3 \mathrm{NaOH}(a q)+\mathrm{NCl}_{3}(g)$$ When $2.94 \mathrm{~g}$ of $\mathrm{NH}_{3}$ reacts with an excess of $\mathrm{NaClO}$ according to the preceding reaction, how many grams of $\mathrm{NCl}_{3}$ are formed?

If chlorine bleach is mixed with other cleaning products containing ammonia, the toxic gas $\mathrm{NCl}_{3}(g)$ can form according to the equation $$3 \mathrm{NaClO}(a q)+\mathrm{NH}_{3}(a q) \longrightarrow 3 \mathrm{NaOH}(a q)+\mathrm{NCl}_{3}(g)$$
When $2.94 \mathrm{~g}$ of $\mathrm{NH}_{3}$ reacts with an excess of $\mathrm{NaClO}$ according to the preceding reaction, how many grams of $\mathrm{NCl}_{3}$ are formed?

Key Concepts

Balanced Chemical Equations

Balanced chemical equations represent the conservation of mass and atoms in a reaction by ensuring that the number of each type of atom on the reactants side is equal to that on the products side. This balance is necessary for accurate stoichiometric calculations and for understanding how reactants transform into products.

Molar Mass Calculation

Molar mass calculation involves determining the mass of one mole of a substance by summing the atomic masses of the constituent atoms. This concept allows for conversion between the mass of a substance and the number of moles, which is crucial for setting up stoichiometric calculations.

Limiting Reactant

The limiting reactant is the substance in a chemical reaction that is completely consumed first, thereby determining the maximum amount of product that can be formed. Even if other reactants are present in excess, the limiting reactant controls the extent of the reaction.

Stoichiometry

Stoichiometry is the branch of chemistry that deals with the quantitative relationships between reactants and products in a chemical reaction. It involves using the balanced chemical equation to determine the amount of substances consumed and produced, making it essential for predicting yields in any chemical reaction.

Mole Concept

The mole concept is a fundamental idea in chemistry that allows chemists to count atoms, molecules, or ions by relating mass to number of particles using Avogadro's number. It provides a bridge between the microscopic scale of atoms and the macroscopic scale of grams and liters used in the laboratory.

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