Question

explain units of equilibrium constant​

Answer 1

Explanation:

The Equilibrium constant expression involves the concentrations or partial pressures of the reactants and products. The units of Equilibrium constant K will depend on the number of moles of reactants and products.

Answer 2

We know that numerical value of equilibrium constant is a function of stoichiometric coefficient used for any balanced chemical equation.

But, what will happen in the size of units of equilibrium constant when the stoichiometric coefficient of the reaction changes ,if sum of the exponent for product is not equal to reactant sum ??

So, for the sake of simplicity in the units of Kp for Kc, the relative molarity or pressure of reactants and products are used with respect to standard condition.

For solution, standard state is 1 mole per litre and for gas, standard pressure equals to 1 atm.

Now the resulting equilibrium constant becomes unitless by using relative molarity and pressure but numerical value may change by any change in the value of standard States molarity and pressure.

Unit of rate constant ,

$k = {(moles/lit)}^{(1-n)} {time}^{-1}$

where, n is order of reaction.