# Questions tagged [kinetics]

The study of rates and steps in mechanisms of chemical processes.

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### Prove that concentrations of all species increase ultimately in a chemical equilibrium when pressure is increased

The statement: For a chemical equilibrium in a sealed container, the concentration of "all" species always increases when the pressure of the mixture is increased by decreasing the volume of ...
114 views

### Multiple rate-determining steps and rate expression

I am trying to understand the concept of the rate laws governing hydrogen evolution of platinum. More specifically, I am trying to understand the multiple occurrence of a rds to the overall rate law ...
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1 vote
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### Why would large activation energies give a large gradient of the rate constant?

I have read carefully this answer on SE, and there is a part I don't understand. SE exchange user said: If you plot the Arrhenius equation (given in your text) vs temperature the slope of this gives ...
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### Limiting current vs Steady-state limiting current

I have been reading on the concept of limiting current. In books, the mass-transfer limiting current is given by, $$i_L = \frac{nFADC^*}{\delta}$$ Often the Cottrell equation is introduced. However, ...
• 289
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### Correct interpretation of Impedance: IR-Drop and Nyquist plots

Good day guys, I have been lately studying impedance and IR drop in electrochemical systems. From my readings I have come across different interpretations. According to my books, from the Nyquist plot:...
• 289
1 vote
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### Rate of Reaction - is it for convenience?

I am a high schooler, i had this doubt while studying chemical kinetics, consider this reaction(elementary) 2A --> B, now let rate of disapperance of A be 4 mol/Ls so now logically since change in ...
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### How are major products defined- Thermodynamically or Kinetically?

In many organic chemistry questions, we use mechanisms that favours thermodynamically stable product (like aromatic rings), compromising the rate by some factor. For example, if there were two ...
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### What is the particle speed in liquids at an average room temperature (20-25 degrees celcius)?

I've been searching online for ages and I can't find anything related to this, everything seems to be about gas particles relating to temperature. I'm investigating simple chemistry related to ...
94 views

### Convection or Advection term in the Absolute flux of a chemical species

I am confused as I have been reading on mass transport on multiple sources and they seem to use "advection" and "convection" interchangeably in the equation for the absolute flux ...
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### Does increasing temperature increase the rate of gaseous reactions?

In chemical kinetics there is a generalised statement that the rate of reaction is dependent upon the concentration of reactants (except for zero order/complex reactions) temperature catalyst surface ...
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### Briggs-Rauscher Reaction potential

I have seen many graphs on the oscillation reaction of the Briggs-Rauscher reaction. They all have potential in V or mV in the y-axis. My question is what this tells about the rate of reaction of the ...
1 vote