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: You choose to investigate some of the solubility guidelines for two ions not listed in the table below, the chromate ion (CrO42 - and the oxalate ion (C2O42-). You are given 0.01 M solutions (A

Problem
You choose to investigate some of the solubility guidelines for two ions not listed in the table below, the chromate ion (CrO42 - and the oxalate ion (C2O42-).

Table 4.1 gives solubility guidelines for common ionic compounds in water and lists any important exceptions.

You are given 0.01 M solutions (A, B, C, D) of four water-soluble salts:

Solution Solute Color of Solution
A Na2CrO4 Yellow
B (NH4)2C2O4 Colorless
C AgNO3 Colorless
D CaCl2 Colorless

When these solutions are mixed, the following observations are made:

Experiment Number Solutions Mixed Result
1 A+B No precipitate, yellow solution
2 A+C Red precipitate forms
3 A+D Yellow precipitate forms
4 B+C White precipitate forms
5 B+D White precipitate forms
6 C+D White precipitate forms

Write a net ionic equation for the reaction that occurs in each of the experiments. Identify the precipitate formed, if any, in each of the experiments.

Write a net ionic equation for the reaction that occurs in the experiment 6.