Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

5. Classification & Balancing of Chemical Reactions

Balancing Chemical Equations (Simplified)

GOB Chemistry

5. Classification & Balancing of Chemical Reactions

Balancing Chemical Equations (Simplified)

Previous problemNext problem

4:11 minutes

Problem 47a

Textbook Question

Balance each of the following neutralization equations:
a. HCl(aq) + Mg(OH)₂(s) → H₂O(l) + MgCl₂(aq)

Verified step by step guidance

Identify the reactants and products in the equation: The reactants are HCl (hydrochloric acid) and Mg(OH)₂ (magnesium hydroxide), and the products are H₂O (water) and MgCl (magnesium chloride).

Determine the correct chemical formula for magnesium chloride: Magnesium (Mg) has a charge of +2, and chloride (Cl) has a charge of -1. Therefore, the correct formula for magnesium chloride is MgCl₂.

Write the unbalanced equation with the correct formula for magnesium chloride: HCl(aq) + Mg(OH)₂(s) → H₂O(l) + MgCl₂(aq).

Balance the equation by ensuring the number of atoms of each element is the same on both sides: Start with magnesium (Mg), then balance chlorine (Cl), hydrogen (H), and oxygen (O).

Verify the balanced equation: Check that the total number of each type of atom is equal on both sides of the equation and that the charges are balanced (if applicable).

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above

Video duration:

Play a video:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Neutralization Reaction

A neutralization reaction occurs when an acid reacts with a base to produce water and a salt. In this process, the hydrogen ions (H⁺) from the acid combine with hydroxide ions (OH⁻) from the base to form water (H₂O). The remaining ions form the salt, which in this case is magnesium chloride (MgCl). Understanding this concept is crucial for balancing the given equation.

Balancing Chemical Equations

Balancing chemical equations involves ensuring that the number of atoms of each element is the same on both sides of the equation. This is achieved by adjusting the coefficients in front of the compounds. The law of conservation of mass dictates that matter cannot be created or destroyed in a chemical reaction, making balancing essential for accurate representation of the reaction.

States of Matter in Reactions

In chemical equations, the states of matter are indicated by symbols such as (aq) for aqueous, (s) for solid, (l) for liquid, and (g) for gas. These states provide important information about the physical form of the reactants and products involved in the reaction. Recognizing these states is vital for understanding the conditions under which the reaction occurs and for correctly balancing the equation.

Watch next

Master Balancing Chemical Equations (Simplified) Concept 1 with a bite sized video explanation from Jules

Start learning

Related Videos

Related Practice

Textbook Question

Which of the following equations are balanced? Balance those that need it.

a. CaC₂ + 2 H₂O → Ca(OH)₂ +C₂H₂

b. C₂H₈N₂ + 2 N₂O₄ → 2 N₂ + 2 CO₂ + 4 H₂O

c. 3 MgO + 2 Fe → Fe₂O₃ + 3 Mg

d. N₂O → N₂ + O₂

1780

views

Textbook Question

Determine whether each of the following chemical equations is balanced or not balanced:

780

views

Textbook Question

Balance each of the following chemical equations:

c. Sb₂S₃(s) + HCl(aq) → SbCl₃(aq) + H₂S(g)

1995

views

Textbook Question

Balance each of the following chemical equations:

d. Al(s) + HCl(aq) → H₂(g) + AlCl₃(aq)

1364

views

Textbook Question

Balance each of the following neutralization equations:

a. HNO₃(aq) + Ba(OH)₂(s) → H₂O(l) + Ba(NO₃)₂(aq)

1310

views

Textbook Question

High temperature combustion processes, such as in combustion engines and coal-fired power plants, can result in the reaction of nitrogen and sulfur with oxygen to form nitrogen oxides (NO_𝓍) and sulfur oxides (SO_𝓍), where x can vary. These NO_𝓍 and SO_𝓍 compounds subsequently undergo further reaction in the atmosphere to create acidic compounds that contribute to acid rain.

a. Do some research to determine the common products that are formed (i.e., what are the values of x) for the reactions of N and S with oxygen. Write balanced equations for these reactions.

1465

views

Textbook Question

If red spheres represent oxygen atoms, blue spheres represent nitrogen atoms, and all the molecules are gases,

b. write a balanced equation for the reaction.

843

views

Textbook Question

If purple spheres represent iodine atoms, white spheres represent hydrogen atoms, and all the molecules are gases,

b. write a balanced equation for the reaction.

718

views