Question

At equilibrium at 1200��c, [i2] = 9.5 ��10���2 m and [i] = 3.2 �� 10���2 m, what is the value of keq for this system?

1) 3.4 �� 10���1
2) 1.1 �� 10���2
3) 1.1
4) 93

Answer 1

The equilibrium constant (Keq) for the reaction I2(g) = 2I(g) with given equilibrium concentrations of I2 and I is calculated to be approximately 1.1 × 10−2.

The correct option is 2.

Step-by-step explanation:

To calculate the equilibrium constant (Keq) for the reaction I2(g) = 2I(g), we use the concentrations of products and reactants at equilibrium. According to the given information:

I2 = 9.5 × 10−2 M

I = 3.2 × 10−2 M

The equilibrium constant expression for this reaction is:

K_eq = I2 / I2

Substituting the given concentrations, we get:

K_eq = (3.2 × 10−2)2 / (9.5 × 10−2)

Solving this gives:

K_eq = (1.024 × 10−4) / (9.5 × 10−2) = 1.0779 × 10−2 ≈ 1.1 × 10−2

The correct option is 2.