## What is KC of a reaction?

Definition of Kc and Kp Kc is an equilibrium constant in terms of molar concentrations and is usually defined as: Kc=[C]c[D]d[A]a[B]b. in the general reaction, aA+bB⇌cC+dD. If a large Kc is formed then there are more products formed.

8.2.1

## What does a high KC value mean?

If K is a large number, it means that the equilibrium concentration of the products is large. In this case, the reaction as written will proceed to the right (resulting in an increase in the concentration of products) If K is a small number, it means that the equilibrium concentration of the reactants is large.

“Keep cool”

## Is h2o included in KC?

Remember if water is a solvent in your reaction, then you can neglect the water concentration term but if water is not a solvent, then water term needs to be included. It was eventually formed during the reaction and hence it is a product ( not a solvent). Hence you need to include it in the Kc expression.

## Why does KC change with temperature?

Increasing the temperature decreases the value of the equilibrium constant. Where the forward reaction is endothermic, increasing the temperature increases the value of the equilibrium constant. So, according to Le Chatelier’s Principle the position of equilibrium will move to the left.

## How do you find the reverse reaction KC?

The Kc of the reverse reaction is the reciprocal of the forward reaction. For example, if the Kc of the forward reaction is 5, the Kc of the reverse reaction is 1/5.

## What does equilibrium constant mean?

The equilibrium constant of a chemical reaction is the value of its reaction quotient at chemical equilibrium, a state approached by a dynamic chemical system after sufficient time has elapsed at which its composition has no measurable tendency towards further change.

## What is the unit of equilibrium constant KC?

Units of Equilibrium Constant Equilibrium constant being the ratio of the concentrations raise to the stoichiometric coefficients. Therefore, the unit of the equilibrium constant = [Mole L1]n.

## How are KC and KP related?

Kc and Kp are the equilibrium constants of gaseous mixtures. However, the difference between the two constants is that Kc is defined by molar concentrations, whereas Kp is defined by the partial pressures of the gasses inside a closed system.

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