Ch. 17 - Chemical ThermodynamicsWorksheetSee 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: Sodium reacts violently with water according to the equation: 2 Na(s) + 2 H2O(l) →2NaOH(aq) + H2(g) The resulting solution has a higher temperature than the water prior to the addition of sodium. What are the signs of ΔH°and ΔS° for this reaction?a. ΔH° is negative and ΔS° is positive.b. ΔH° is positive and ΔS° is negative. c. ΔH° is negative and ΔS° is negative. d, ΔH° is positive and ΔS° is positive. 

Problem

Sodium reacts violently with water according to the equation: 

2 Na(s) + 2 H2O(l) →2NaOH(aq) + H2(g) 

The resulting solution has a higher temperature than the water prior to the addition of sodium. What are the signs of ΔH°and ΔS° for this reaction?

a. ΔH° is negative and ΔS° is positive.

b. ΔH° is positive and ΔS° is negative. 

c. ΔH° is negative and ΔS° is negative. 

d, ΔH° is positive and ΔS° is positive.