Equilibrium Constants for Reactions Involving Gases

The concentration of a gas in a mixture is proportional to its partial pressure. Therefore, the equilibrium constant can be expressed as the ratio of the partial pressures of the gases.

Reference : http://scienceaid.co.uk/chemistry/physical/eqconstants.html

Reference : http://chem-guide.blogspot.com/2010/04/relation-between-kp-and-kc-derivation.html

In calculation K_p, the partial pressures are always in atm. The substances that are not in form of gas are not use to calculate for K_p. And the relationship between them will be shown below.

Reference : http://chem-guide.blogspot.com/2010/04/relation-between-kp-and-kc-derivation.html

**is the difference between the number of moles of reactants and moles of products.

**Notice : K_p and K_c are not necessarily the same. And they will be the same when  = 0.

 

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