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 schematic drawings best describes a solution of Li2SO4 in water (water molecules not shown for simplicity)?

Solution: Which of the schematic drawings best describes a solution of Li2SO4 in water (water molecules not shown for simplicity)?

Problem

Which of the schematic drawings best describes a solution of Li2SO4 in water (water molecules not shown for simplicity)? Diagrams show (a) a negative two atom bonded to two positive one atoms; (b) five negative two and three positive one ions in solution; or (c) three negative two and five positive one ions.

Solution

We’re being asked to determine the right representation of Li2SO4 in water.


The choices are:


Recall that according to the solubility rules: Group 1A ions (Li+, Na+, K+, etc.). 

  • The ionic compound given contains a Group 1A metal, lithium. Therefore, automatically, the compound is soluble.
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