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: Consider the following processes (Treat all gases as ideal). 1. Nitrogen gas is compressed isothermally to one half its original volume. 2. Carbon dioxide is allowed to expand isothermally to 10 times its original volume. 3. A glass of water loses 100 J of energy reversibly at 30°C. 4. The temperature of one mole of helium is increased 25°C at constant pressure. 5. The pressure of one mole of oxygen gas is allowed to double isothermally.   Which of these processes leads to an increase in entropy?   a) 1 and 4         b) 5         c) 3 and 5         d) 2 and 4         e) 1 and 2  

Problem

Consider the following processes (Treat all gases as ideal).

1. Nitrogen gas is compressed isothermally to one half its original volume.

2. Carbon dioxide is allowed to expand isothermally to 10 times its original volume.

3. A glass of water loses 100 J of energy reversibly at 30°C.

4. The temperature of one mole of helium is increased 25°C at constant pressure.

5. The pressure of one mole of oxygen gas is allowed to double isothermally.

 

Which of these processes leads to an increase in entropy?

 

a) 1 and 4         b) 5         c) 3 and 5         d) 2 and 4         e) 1 and 2