Ch.8 - Periodic Properties of the ElementsSee 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: Consider the process of 2 H(g) → H 2 (g) where ΔH = −436 kJ/molDetermine each sentence below whether it's true or false. Shining light on hydrogen atoms could put electrons in n = 3, provided the intensity was sufficiently high.Coulomb’s Law describes that the electrons from one H atom would be attracted to the electrons of the other H atom.The temperature of the surroundings would increase as this reaction proceeds.Reacting two moles of H(g) would produce 2.02 grams of H 2.When this reaction occurs in a sealed container at constant temperature, the pressure in the container should decrease.Reacting two moles of H(g) would release 436 kJ.

Problem

Consider the process of 2 H(g) → H 2 (g) where ΔH = −436 kJ/mol

Determine each sentence below whether it's true or false.

 

Shining light on hydrogen atoms could put electrons in n = 3, provided the intensity was sufficiently high.

Coulomb’s Law describes that the electrons from one H atom would be attracted to the electrons of the other H atom.

The temperature of the surroundings would increase as this reaction proceeds.

Reacting two moles of H(g) would produce 2.02 grams of H 2.

When this reaction occurs in a sealed container at constant temperature, the pressure in the container should decrease.

Reacting two moles of H(g) would release 436 kJ.