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: Complete and balance each of the following equations. If no reaction occurs, write no reaction.a. NaOH(aq) + FeBr3(aq) → b. BaCl2(aq) + AgNO3(aq) → c. Na2CO3(aq) + CoCl2(aq) → d. K2S(aq) + BaCl2(aq) →

Solution: Complete and balance each of the following equations. If no reaction occurs, write no reaction.a. NaOH(aq) + FeBr3(aq) → b. BaCl2(aq) + AgNO3(aq) → c. Na2CO3(aq) + CoCl2(aq) → d. K2S(aq) + BaCl2(aq) →

Problem

Complete and balance each of the following equations. If no reaction occurs, write no reaction.

a. NaOH(aq) + FeBr3(aq) →

 

b. BaCl2(aq) + AgNO3(aq) →

 

c. Na2CO3(aq) + CoCl2(aq) →

 

d. K2S(aq) + BaCl2(aq) →

Express your answer as a chemical equation. Enter no reaction if no precipitate is formed.

Solution

a. NaOH(aq) + FeBr3(aq) →

  • This reaction is a double displacement reaction where the ions are switched with their respective counterions

  • In this case, Fe(OH)(from Fe3+ and OH-) and NaBr (from Na+ and Br-) will be produced. Their charges will be the subscript of the their respective counterion

  • Balancing will give us: 3NaOH(aq) + FeBr3(aq) → 3NaBr + Fe(OH)3

  • According to the solubility rules, Fe(OH)3 is an insoluble solid 

  • 3NaOH(aq) + FeBr3(aq) → 3NaBr(aq) + Fe(OH)3(s)

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