[bcaked]

#1. Gaseous Hydrogen Iodide is placed in a closed container at 425 C, Where it partially decomposes to Hydrogen and Iodine:

2HI (g) H2 (g) + I2 (g)

The following are given:

[HI] = 2.53 * 10-3 M  [H2] = 3.79 * 10-4 M [I2] = 3.79 * 10-4 M

Show the equilibrium Constant formula

What is the value of Kc at this temperature? Show all work for credit.

#2.
The two common chlorides of Phosphorus, PCl3 and PCl5, both important in the production of other phosphorous compounds, coexist in equilibrium through

PCl3 (g) + Cl2 (g) PCl5 (g)

At 250 C, an equilibrium mixture in a 2.50 L flask contains 0.105 g  PCl5, 0.220 g PCl3, and 2.12 g Cl2.

Show the equilibrium Constant formula

What are the values of (a) Kc for this reaction? Show all work for credit.

[Borek]

Show all work for credit.

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