Ch.8 - Periodic Properties of the ElementsWorksheetSee 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 may want to reference (Pages 284 - 288) Section 7.8 while completing this problem.Potassium and hydrogen react to form the ionic compound potassium hydride. Use data in Figures 7.10 and 7.12 to determine the energy change in kJ/mol for the following two reactions:K(g) + H(g) → K+(g) + H–(g)K(g) + H(g) → K–(g) + H+(g)Based on your calculated energy changes, which of these reactions is energetically more favorable?

Problem

You may want to reference (Pages 284 - 288) Section 7.8 while completing this problem.

Potassium and hydrogen react to form the ionic compound potassium hydride. Use data in Figures 7.10 and 7.12 to determine the energy change in kJ/mol for the following two reactions:
K(g) + H(g) → K+(g) + H(g)
K(g) + H(g) → K(g) + H+(g)

Based on your calculated energy changes, which of these reactions is energetically more favorable?