Reaction Rates, the Batch Reactor, and the Real World - Reaction Rates - Rate of a single irreversible reaction

3 important questions on Reaction Rates, the Batch Reactor, and the Real World - Reaction Rates - Rate of a single irreversible reaction

What are reaction rates almost always dependent on?

They almost always have a power-law dependency on the densities (such as concentration, density on a surface, or partial pressure) of chemical species.

How can the density in liquids be expressed?

In liquids the density is usually expressed in concentration:

What is the most used quantity for density in gasses?

The partial pressure Pj which is related to the mole fraction yj
where N is the total number of moles and Nj the number of moles of species j.
And:

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