Questions tagged [statetransition]

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Primary kinetic isotope effect

Why does the transition state in both protonated and deuterated molecules have the same energy? My textbook assumes that during transitional state the isotopic bond is half-broken or on its way to ...
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Deriving the absorption coefficient from state transitions

This source states that the absorption coefficient $\gamma$ is proportional to the difference in particle number density $\Delta n$ per unit volume between the initial and the final rotational state ...
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2answers
29 views

Doubt concerning Andrews Curve [closed]

In Andrews Curve of $\ce{CO2}$, what do the horizontal lines signify? I know that the gas changes to liquid in that region, but since the pressure and temperature is held constant, how does the gas ...
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1answer
46 views

Are phase transitions reversible when performed at supercooled temperatures?

For the state transition of supercooled water to ice, is the process reversible? I wonder this because I want to know if I can use entropy change of the universe is 0. If it isn't reversible, how do ...