what is the definition of "reaction rate constant"?

Answer 1

Reaction rate for a reactant or product in a particular reaction is defined as the amount of the chemical that is formed or removed (in moles or mass units) per unit time per unit volume.

In chemical kinetics a reaction rate constant quantifies the speed of a chemical reaction.

Reaction rate constant = k = A e(-Ea/RT)

Recall from Collision Theory that in order for a reaction to occur, two molecules must collide in the proper orientation and possess a minimum amount of energy to react. This equation accounts for all of the requirements of Collision Theory. The factor A represents the frequency of collisions between two molecules in the proper orientation for reaction to occur. The value of A is determined by experiment and will be different for every reaction.

The value of the exponential term (e-Ea/RT) describes the fraction of molecules with the minimum energy required to react. R is the gas constant, 8.314 J/mol-K, T is the temperature in Kelvin, and Ea is the Activation Energy. Warning! Activation Energy is often given in the units of kJ/mol, while R is in J/mol-K. Don't forget that factor of 1000!

Answer 2

Reaction Rate Definition

Answer 3

Definition Of Reaction

Answer 4

most chemical reactions obey one of three differential rate laws. Each rate law contains a constant, k, called the rate constant. The units for the rate constant depend upon the rate law, because the rate always has units of mole L-1 sec-1 and the concentration always has units of mole L-1...Zero-Order Reaction... For a zero-order reaction, the rate of reaction is a constant.... When the limiting reactant is completely consumed, the reaction abrupts stops

Answer 5

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Answer 6

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RE:
what is the definition of "reaction rate constant"?

Answer 7

it's how easy the reaciton takes place esentially, but this belongs in science, and chemistry subsection as well

Answer 8

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