Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

3. Chemical Reactions

Limiting Reagent

General Chemistry

3. Chemical Reactions

Limiting Reagent

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Multiple Choice

Which of the following steps is essential to determine the limiting reactant in a chemical reaction?

Calculate the moles of each reactant based on the balanced equation.

Determine the reactant with the lowest concentration.

Select the reactant that appears first in the chemical equation.

Identify the reactant with the highest molar mass.

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Verified step by step guidance

Begin by writing the balanced chemical equation for the reaction. This is crucial as it provides the stoichiometric relationships between the reactants and products.

Convert the given quantities of each reactant to moles. This can be done using the formula: \( \text{moles} = \frac{\text{mass}}{\text{molar mass}} \) if the mass is given, or using the concentration and volume if the reactants are in solution.

Using the balanced equation, determine the mole ratio between the reactants. This will help in comparing the actual mole ratio to the stoichiometric ratio.

Calculate the theoretical amount of product that can be formed from each reactant. This involves using the stoichiometric coefficients from the balanced equation to find out how much product each reactant can produce.

Identify the limiting reactant by determining which reactant produces the least amount of product. The reactant that forms the least amount of product is the limiting reactant, as it will be completely consumed first, limiting the extent of the reaction.