# Possible error in temperature dependence of Gibbs energy in textbook?

• Syrus
In summary, the Gibbs energy (G) is a thermodynamic quantity that describes the maximum amount of work that can be extracted from a system at constant temperature and pressure. It is related to temperature through the equation G = H - TS, where H is the enthalpy, T is the temperature, and S is the entropy. However, there is a possible error in the temperature dependence of Gibbs energy in textbooks due to experimental uncertainties and outdated or simplified equations. The magnitude of this error can vary and can have practical implications in fields such as chemical engineering and materials science. To address this issue, it is important to use reliable and up-to-date sources for thermodynamic data and to continuously improve and refine the equations used to calculate temperature dependence of

## Homework Statement

In the attached picture, I am wondering if there is an error in equation (6.34). In equation (6.33), the partial differential of G/T is taken with respect to T. In (6.34), however, the partial differential of G/T is taken with respect to 1/T and the same outcome is produced (see the right-hand side of the equation). Is this an error, or am i not catching something here?

## The Attempt at a Solution

#### Attachments

• IMAG0047.jpg
20.7 KB · Views: 423
Yep, good catch; the first denominator in (6.34) should be $\partial T$ instead of $\partial(1/T)$.

## 1. What is the Gibbs energy and how is it related to temperature?

The Gibbs energy (G) is a thermodynamic quantity that describes the maximum amount of work that can be extracted from a system at constant temperature and pressure. It is related to temperature through the equation G = H - TS, where H is the enthalpy, T is the temperature, and S is the entropy.

## 2. Why is there a possible error in the temperature dependence of Gibbs energy in textbooks?

The temperature dependence of Gibbs energy is often calculated using tabulated values of enthalpy and entropy, which can introduce errors due to experimental uncertainties and assumptions made in the measurements. Additionally, some textbooks may use outdated or simplified equations that do not accurately reflect the true temperature dependence of Gibbs energy.

## 3. How significant is the error in the temperature dependence of Gibbs energy in textbooks?

The magnitude of the error can vary depending on the specific system and the accuracy of the data used. In some cases, the error may be negligible, while in others it can significantly impact the calculated values of Gibbs energy and related thermodynamic properties.

## 4. What are the potential consequences of using incorrect temperature dependence of Gibbs energy?

Using incorrect temperature dependence of Gibbs energy can lead to inaccurate predictions of thermodynamic processes and properties, which can have practical implications in fields such as chemical engineering and materials science. It can also result in incorrect interpretations of experimental data and hinder progress in scientific research.

## 5. How can we address the issue of possible error in the temperature dependence of Gibbs energy in textbooks?

To address this issue, it is important to use reliable and up-to-date sources for thermodynamic data. Additionally, researchers and textbook authors can work towards improving and refining the equations used to calculate temperature dependence of Gibbs energy, taking into account any new experimental data and research findings.