The Quiz

Chapter Listing

Home: Journey to the Clapeyron-Clausius Equation

Chapter One: The Gibbs Equation

Chapter Two: The Tds Equation

Chapter Three: The Maxwell Relations

Chapter Four: The Clapeyron Equation

Chapter Five: The Clapeyron-Clausius Equation

Experiment: Complete the Journey From Home: Fun Experiment!

Real World Applications: The Sky's the Limit with the Clapeyron-Clausius Equation

HELP I'M NOT READY TAKE ME BACK! - The Clapeyron-Clausius Equation

Welcome traveller! It appears that you have successfully completed your journey to the Clapeyron-Clausius Equation! Note down your answers and check them using the link provided. If you get a question wrong, return to the relevant chapter to cement your knowledge. Onwards!

Preliminary task:

We are very keen to keep updating this site and acting on your feedback. Please let us know what you thought of this site in the comments!

Question 1: Gibbs

1a - What is Gibbs' Equation?

1b- What is a use of Gibbs' Equation in chemistry?

1c- What is a use of Gibbs' Equation in thermodynamics?

Question 2: Tds Relations

2a- In a closed reversible system, what two types of energy can be ignored?

2b- What is an equation for work done relating to pressure?

2c- What are both of the Tds relations?

Question 3: Maxwell Relations

3a - What is the internal energy relation?

3b- What is the enthalpy relation?

3c- What is the Gibbs relation?

3d- What is the Helmholtz relation?

Question 4: Clapeyron Equation

4a - Which two previous equations/relations can be manipulated to get the Clapeyron Equation?

4b - What is the Clapeyron Equation?

4c - If a substance is going through phase transition and which involves contraction, will sat(dP/dT) be negative or positive?

Question 5: Clapeyron-Clausius Equation

5a - What assumptions must be made to use the Clapeyron-Clausius equation?

5b - What is the Clapeyron-Clausius Equation?

5c - The vapour pressure of a substance is 150 Pa at 21°C and has a heat of vaporisation of 55.8 kJ/mol. What is the vapour pressure of the substance at 66 °C?

5d - The vapour pressure of a substance is 229 Pa at 50 °C and 300 Pa at 97 °C, what is the enthalpy change of the substance when changing from liquid to vapour?

Quiz answers

Wait. How is this useful?! - The Sky's the Limit with the Clapeyron-Clausius Equation

Extra reading links:

Example Questions Using The Equation

Extra Reading on the Gibbs Equation

A More Mathematical Approach to Deriving Thermodynamic Relations