Table of contents

1. Matter and Measurements4h 29m
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 35m
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. Amines38m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 46m
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

10. Acids and Bases

Acid-Base Reactions

GOB Chemistry

10. Acids and Bases

Acid-Base Reactions

3:17 minutes

Problem 45dTimberlake - 13th Edition

Textbook Question

Complete and balance the equation for each of the following reactions: b. Zn(s) + HCl(aq) →

Verified step by step guidance

Identify the type of reaction: This is a single displacement reaction where zinc (Zn) will displace hydrogen (H) from hydrochloric acid (HCl).

Write the unbalanced equation: Zn(s) + HCl(aq) → ZnCl₂(aq) + H₂(g).

Balance the equation: Start by balancing the number of chlorine (Cl) atoms. Since there are two Cl atoms in ZnCl₂, you need two HCl molecules.

Adjust the coefficients: Place a coefficient of 2 in front of HCl to balance the Cl atoms: Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g).

Verify the balance: Check that the number of each type of atom is the same on both sides of the equation. There is 1 Zn, 2 Cl, and 2 H on each side.

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Key Concepts

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

Chemical Reactions

A chemical reaction involves the transformation of reactants into products through the breaking and forming of chemical bonds. In this case, zinc (Zn) reacts with hydrochloric acid (HCl) to produce zinc chloride and hydrogen gas. Understanding the types of reactions, such as single displacement, is crucial for balancing equations.

Balancing Chemical Equations

Balancing a chemical equation ensures that the number of atoms for each element is the same on both sides of the equation, adhering to the law of conservation of mass. This process involves adjusting coefficients in front of compounds to achieve balance, which is essential for accurately representing the reaction.

Stoichiometry

Stoichiometry is the quantitative relationship between reactants and products in a chemical reaction. It allows chemists to calculate the amounts of substances consumed and produced, which is vital for balancing equations and predicting the outcomes of reactions. In the given reaction, stoichiometry helps determine the correct coefficients for Zn and HCl.