Questions tagged [chemical-potential]

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1answer
36 views

Enthalpy in the van't Hoff equation

In the van't Hoff equation, why do we say that the change in enthalpy at standard pressure is constant? My book derives the equation for a mixture of ideal gases reacting with each other. The proof ...
3
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0answers
40 views

Practical meaning of omega potential

In statistical thermodynamics, the quantity omega potential is defined and is different for fermions, photons, phonons and other particles. I have been understanding the derivations of omega potential ...
1
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1answer
39 views

Do high-energy chemical bonds indicate strong chemical bonds?

In my head it seems reasonable that a high-energy bond would indicate that the bond is strong, however a question got me thinking. Take for example lead azide, a very explosive compound that is often ...
0
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0answers
19 views

How to explain why the boiling point of the aqueous solution of a non-volatile solute increases

I have the following graph: with the following expression for the chemical potential variation: I need to explain why the boiling point of the aqueous solution of a non-volatile solute increases, ...
-1
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1answer
65 views

Ordered and random energy [closed]

One of the books refer to potential energy being ordered whereas heat energy being random. Could someone explain what is ordered and random energy?
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0answers
21 views

Electorchemical Systems (Newman 3rd edition) problem solving

I am trying to solve the very first problem (Problem 1.1) of Newman 3rd edition book. The book problem goes as follows: 'Starting with the following equation for the concentration overpotential: $\...
1
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2answers
126 views

CO2 Catalytic Converter

We all know how CO2, as a greenhouse gas affects the climate and causes global warming. I was thinking of a small device, which could be attached to the exhaust pipe of an automobile. It could convert ...
4
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3answers
255 views

Physical significance of chemical potential and fugacity

I'm studying equilibria and thermodynamics and came across these two terms. My problem is, unlike other thermodynamic properties that I can understand physically like volume, pressure, enthalpy etc. ...
2
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0answers
25 views

Working out energies of hydrogen bonds by comparing chemical potential of vapour and condensed phase - equation derivation

I want to ask a question about working out the energy of a hydrogen bond between two water molecules, $w_{AA}$ using the chemical potentials of vapour and condensed phases. I was reading K. Dill, ...
0
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0answers
23 views

How to control the potential of an electrode?

I Have been reading about redox potential and Nernst equation. However, I got the understanding that the potential for the material is fixed (excluding Temperature). My Problem: I have two electrodes ...
4
votes
1answer
59 views

how to obtain potential curves from database?

I'm sorry if this is a really super basic question. I am looking at the potential curves of a diatomic molecule in a book , and to plot them. I google the molecule and got to the NIST website, there I ...
-1
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1answer
69 views

How to experimentally determine the chemical potential of salt water? [closed]

I have NaCl dissolved in water. How do I find the chem potential?
-1
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2answers
126 views

Chemical potential and gibbs free energy

I would like to ask why the $\Delta_rG_1 = -RT\ln K + RT\ln Q$ is not equal to $Δ_rG_2$ numerically as shown in the figure where I derived $\Delta_rG_2 = RT\ln Q$ using a cyclic ring since $\Delta_rG$ ...
1
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0answers
122 views

Integration of chemical potential

I want to ask a question about chemical potential, $\mu$. I dislike the use of integrals to describe quantities in thermodynamics. If we observe the definition of chemical potential for constant ...