PCl5 dissociates according to the reaction: PCl5(g) = PCl3(g) + Cl2(g) One mole of PCl5 was placed in one liter of solution. When equilibrium was established, 0.2 mole of PCl5 remained in the mixture. What is the equilibrium constant for this reaction? (Hint: remember the ICE procedure? initial, change, and equilibrium)

Explanation:

Hello,

In this case, for the given equilibrium, we write the law of mass action:

Next, in terms of the change due to the reaction extent (ICE procedure):

Clearly, the initial concentration phosphorous pentachloride is 1 M (one mole per litre), therefore, since the equilibrium concentration is 0.2 M (same volume) we can compute :

Thus, we compute the equilibrium constant:

Regards.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.