Questions tagged [chemical-potential]

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4
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1answer
79 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 ...
4
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3answers
481 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. ...
3
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0answers
61 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 ...
2
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1answer
55 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 ...
2
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0answers
139 views

Do helium and neon form "stable" chemical compounds?

Helium and neon are the two most unreactive elements in the Periodic Table, but could they form compounds with an element such as fluorine that won't spontaneously explode and decompose outside of ...
2
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0answers
26 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, ...
1
vote
1answer
44 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 ...
1
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2answers
221 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 ...
1
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0answers
131 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 ...
0
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2answers
76 views

Equilibrium chemical potential if the population is not conserved?

The chemical potential, $\mu$, is equal to the free energy $F$, per photon. $$F = \mu = u-Ts$$ The energy per photon is $u=h\nu$ and $s$ is the entropy per photon. Say we have a process where an ...
0
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1answer
31 views

Is equilibrium point for a coupled equilibria of arbitary number of coupled reactions is a unique point?

I was solving a question of salt hydrolysis for a mixture of Weak Acid-Base Salts, given the initial amount of salt and Equilibrium constants. I was trying to approach the problem in two ways, ...
0
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0answers
32 views

Confusion about using Nernst Equation in Hydrogen Electrode

I was trying to calculate the potential of hydrogen electrode when $\pu{0.1 M}~\ce{HCl}$ was present in the hydrogen electrode at $\pu{300 K}.$ The chemical equation is $$\ce{H2 <=> 2 H+ + 2 e-}$...
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0answers
8 views

Finding Potential Depth of Multiple-Minimum in a PEC

Suppose we have the following curve with more than one well and different maximum points: My simple question is how to calculate the potential depth of each well? Do we calculate all the potential ...
0
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0answers
28 views

How Sodium Nitrite Interacts with Air and Humidity

What happens to integrity of sodium nitrite (NaNo², CAS: 7632-00-0) of AR grade when it gets exposed to air? If container has been opened and chemical has been exposed to air for a few minutes and ...
0
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0answers
23 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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1answer
85 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
160 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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1answer
74 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?