Ch.4 - Chemical Quantities & Aqueous ReactionsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Which of the following reactions is an oxidation-reduction reaction? 1. HNO3 (aq) + NaOH (aq) → NaNO3 (aq) + H2O (l) 2. Ca (s) + HCl (aq) → CaCl 2 (aq) + H2 (g) 3. 3 Na2S (aq) + 2 FeCl 3 (aq) → Fe2S3 (s) + 6 NaCl (aq) 4. CO2 (g) + 2 LiOH (aq) → Li 2CO3 (s) + H2O (l)

Problem

Which of the following reactions is an oxidation-reduction reaction?

1. HNO3 (aq) + NaOH (aq) → NaNO3 (aq) + H2O (l)

2. Ca (s) + HCl (aq) → CaCl 2 (aq) + H2 (g)

3. 3 Na2S (aq) + 2 FeCl 3 (aq) → Fe2S3 (s) + 6 NaCl (aq)

4. CO2 (g) + 2 LiOH (aq) → Li 2CO3 (s) + H2O (l)