What does kp mean in chemistry

When comparing K and Q:. See Relationship Between K and Q for more information. A mixture of hydrogen, iodine, and hydrogen iodide, each at 0. Therefore, more HI will be produced. Write the K c for the reaction and state where the reaction is Homogeneous or Heterogeneous. Determine values of K c from the K p value given: number 7 from p. Write the K p for the reaction and state where the reaction is Homogeneous or Heterogeneous.

Determine values of K p from the K c value given: number 8 from p. The two common chlorides of Phosphorus, PCl 3 and PCl 5 , both important in the production of other phosphorous compounds, coexist in equilibrium through: number 17 from p. Equilibrium constant expression in terms of partial pressure is designated as K p. Equilibrium constant Kp is equal to the partial pressure of products divided by partial pressure of reactants and the partial pressure are raised with some power which is equal to the coefficient of the substance in balanced equation.

Let us consider a general gas phase equilibrium reaction where a moles of A molecule reacts with b moles of B molecule to form c moles of C molecule and d moles of D molecule. And K p is equilibrium constant and subscript p refers to partial pressure.

Partial pressures are expressed in atmosphere. A homogeneous gaseous equilibrium is one in which all the reactants and products are in gas phase. The relation between Kp and Kc Pdf can be downloaded. Depending on the change in the number of moles of gas molecules, Kp and Kc relation will be changing.

If the change in the number of moles of gas molecules is positive, i. If the change in the number of moles of gas molecules is negative, i. Consider the following reversible equation and hence calculate Kp and Kc and derive the relationship between Kp and Kc:.

Given the reversible equation,. K p represents the equilibrium constant in terms of partial pressure and can only be used with gases since aqueous solutions do not have partial pressure. In homogenous equilibria, where all the reactants and products are gases, the textbook considers K and K p to be the same. Hope this helps!