k versus k'

[Ella Figueroa 2H]

I wanted to know the difference between k versus k'? what's the difference between K and k (lower and upper case)?

[Vincent Cao 2D]

I wanted to know the difference between k versus k'? what's the difference between K and k (lower and upper case)?

k is the forward rate in an equilibrium reaction, and k' is the reverse rate in an equilibrium reaction. K is the equilibrium constant which is Products over reactants after a long period of time/when equilibrium is reached, while k refers to rate. These two are a little confusing if you read too quickly through problems.

[Maggie_Harned_3H]

From my understanding k is the rate for a forward reaction and k' is the rate for a reverse reaction. Capital K is equilibrium constant or ratio of rate constants.

[Sylvia Zhang 2L]

k is the rate constant for the forward reaction, and k' is the rate constant for the reverse reaction. K (uppercase) is the equilibrium constant, while k (lowercase) is used in kinetics as the rate constant of the reaction.

[Natalie Inglis 2K]

For k and k' (also sometimes written as k sub -1) k is in reference to the forward reaction rate constant, while k' is in reference to the reverse reaction rate constant. Capital K is the equilibrium constant of an equation. At equilibrium the forward rate = the reverse rate, so we can write that K = (k/k').

[tristenaguinaldo]

K refers to the equilibrium constant of a chemical reaction, which is a constant value that describes the ratio of product concentrations to reactant concentrations at equilibrium for a given reaction at a given temperature. k refers to the rate constant of a chemical reaction, which is a constant value that describes the rate at which a reaction proceeds at a given temperature. k also have units, while K doesn't. k is also dependent on initial concentrations of reactants and products, while K is dependent on temperature. k is considered the forward rate in an equilibrium reaction while k' is the reverse rate in an equilibrium reaction.

[Yu_Jia_Xu_2I]

K is the equilibrium constant. k is the rate constant. k is usually the forward rate constant whereas k' is usually the reverse rate constant.

[Mav Hadsall 3I]

I wanted to know the difference between k versus k'? what's the difference between K and k (lower and upper case)?

Like other posters said, k is the rate constant of the forward reaction while k' is the rate or the reverse reaction; K is the equilibrium constant. There is also an intrinsic relationship between k, k', and K.

Look at the chemical equation A+B-<-->C+D. For this eq, rate(forward) = k[A][B] and rate(reverse) = k'[C][D]. We also know that the rate of the forward rxn is equal to the rate of the reverse rxn since this chemical eq is at equilibrium (i tried to show that with the <--> arrows). We can then set k[A][B] = k'[C][D], which allows us to do something interesting if we cross divide: k/k' = [C][D]/[A][B] which is equal to K our equilibrium constant! I hope that helps :)

[705748759]

I think that k is the rate for a forward reaction and k' is the rate for a reverse reaction. K is the equilibrium constant or ratio of rate constants.