Ch.6 - Thermochemistry WorksheetSee 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 lose 9 pounds over a 26-day period. Which of the following quantities act like a state function: the number of calories you consume, your weight, or the number of calories burned through exercise?

Problem

You lose 9 pounds over a 26-day period. Which of the following quantities act like a state function: the number of calories you consume, your weight, or the number of calories burned through exercise?

Solution

We have to determine which of the given quantities act like state functions when a person loses 9 pounds over a 26-day period.


The given quantities are:

1. The number of calories consumed

2. The weight

3. The number of calories burned through exercise


To solve this problem, we need to be first aware of what state functions and path functions are.

State functions are those properties whose value does not depend upon the path taken to reach that value.

The value of a state function depends only upon the initial and final state of a system.

A mnemonic to remember state functions is: PVT HUGS

These represent pressure (P), volume (V), temperature (T), enthalpy (H), internal energy (U), Gibbs free energy (G) and entropy (S).

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