Question

A reaction mixture contains 0.89 atm I2 and 1.77 atm I. Which of the following statements is TRUE concerning this system?

C will increase
C will decrease
Cannot be predicted
C will not change

Answer 1

Answer – Given, reaction - I₂(g) ↔ 2I(g) Kp = 0.209

When, I₂ = 0.89 atm and I = 1.77 atm

So first we need to calculate the reaction quotient

reaction quotient Q p= P (I)² / P (I₂)

                                = (1.77)² / 0.89

                                = 3.52

So Qp >Kp

So we know when Qp > Kp then there is reaction equilibrium shift towards the left side , means reactant side.

So answer is 3) The reaction will shift in the direction of reactants