What type of problem is each part in the following two problems? Ex 6. For the f

Question

What type of problem is each part in the following two problems? Ex 6. For the following reaction Ke E 25°C Hz (g) I2 (g) 2 HI(g) A. Write the equilibrium expression for this reaction. B. At equilibrium at 25 c, CHIJ 0.080 M and [H21 [Iz] o.010 M. Find Ke. c. An injection of an additional O.016 moles HI per liter into the part A flask temporarily produces new initial concentrations (so that the new HIJ 0.096 M but the others are unchanged). What are the concentrations of all species after the reaction has again come to equilibrium?

Explanation / Answer

H2 + I2 -----> 2 HI
Kc = [HI]^2/[H2][I2]
Kc = (0.08)^2/((0.01)*(0.01))
Kc = 64
                    H2 + I2 -----> 2 HI
initially       0       0           0.096
at equili   x       x         (0.096 - 2x)
Kc = [HI]^2/[H2][I2]
64 = (0.096-2x)^2/(x*x)
x = 0.0096 = [H2] = [I2]
[HI] = (0.096 - 2*0.0096) = 0.0768

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