At 250ºC, the equilibrium constant Kp for the reaction PCl5(g) PCl3(g) + Cl2(g) is 1.80. Sufficient PCl5 is put into a reaction vessel to give an initial pressure of 2.74 atm at 250ºC. Calculate the pressure of PCl5 after the system has reached equilibrium

1.2 atm is the pressure of   after the system has reached equilibrium.

Explanation:

Initial pressure of the =2.74 atm

The value of the equilibrium constant =

Initially

2.74 atm      0       0

At equilibrium

(2.74-p)      p         p

The expression of an equilibrium constant can be given as:

Solving for p:

p = 1.50 atm

Pressure of the at equilibrium :

= (2.74-p) atm  = 2.74 - 1.50 atm = 1.2 atm

1.2 atm is the pressure of   after the system has reached equilibrium.

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.