Question

Consider the following reaction:

A(*g*)⇌2B(*g*)

Find the equilibrium partial pressures of A and Bfor each of the
following different values of *K*p. Assume that the initial
partial pressure of B in each case is 1.0 atm and that the initial
partial pressure of A is 0.0 atm. Make any appropriate simplifying
assumptions.

A) Kp= 1.6x10^-4

B) Kp=2.0X10^5

Answer #1

A (g) <----------------> 2 B (g)

0 1

+x 1-2x

Kp = P^{2}_{B} / P_{A}

1.6 x 10^-4 = (1-2x)^2 / x

1.6 x 10^-4x = 1 + 4x^2 - 4x

x = 0.50

**P _{A} = 0.496 = 0.50 atm**

**P _{B} = 1 - 2x = 0.008 atm**

b)

Kp = P^{2}_{B} / P_{A}

2 x 10^5 = (1-2x)^2 / x

x = 5.0 x 10^-6

**P _{A} = 5.0 x 10^-6 atm**

**P _{B} = 1 - 2x = 0.1 atm**

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Find the equilibrium partial pressures of A and B for each of the
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partial pressures of A and B for each of the following different
values of Kp. Assume that the initial partial pressure of B in each
case is 1.0 atm and that the initial partial pressure of A is 0.0
atm. Make any appropriate simplifying assumptions.
A) Kp= 2.0×10−4
Enter your answers numerically separated by a comma. Express
your answer using two significant figures.
B) Kp= 1.8×105
Enter your answers numerically separated by...

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partial pressures of A and B for each of the following different
values of Kp. Assume that the initial partial pressure of B in each
case is 1.0 atm and that the initial partial pressure of A is 0.0
atm. Make any appropriate simplifying assumptions.
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Enter your answers numerically separated by a comma. Express
your answer using two significant figures.
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Enter your answers numerically...

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