PLEASE ANSWER ALL

1. For the reaction given below, determine which direction the system will shift (if at all) in response to the given stresses.

2H₂(g) + O₂(g) D 2H₂O(g) D DH = -241kJ/mol

1. Increasing temperature

2. Decreasing pressure

3. Adding carbon monoxide gas

4. Adding an inert gas

2. The following reaction of carbon monoxide and water has a K_c value of 8.3.

CO(g) + H₂O(g) D H₂(g) + CO₂(g)

If CO(g) and H₂O(g) have the same initial concentration of 0.20mol/L, what

concentration of CO₂(g) will be present at equilibrium?

3. 12. At a certain temperature, Kc = 4.0 for the following reaction. 2HF(g) H2(g) + F2(g)

A 1.0 L reaction vessel contained 0.045 mol of F2(g) at equilibrium. What was the initial amount of HF in the reaction vessel?

4. . In the following reaction at 448 , the equilibrium concentrations are HI = 0.0040M, H2 = 0.0075M, I2 = 0.000043M. Calculate the equilibrium constant given the reaction below:

2 HI(g) H2(g)+I 2(g)

5. For the following reaction at equilibrium at 2000 , K eq = 1.6 x 103 .

2 NO (g) N2 (g) + O2 (g) The concentration of NO is 0.13 mol/L. If the concentrations of N2 and O2 are equal, calculate the concentration of N2.

6. What is the solubility of silver iodide in grams per litre? (K_sp = 8.3 x 10^-17)

7. The K_sp value for BaSO₄ is 1.5 x 10^-9. Calculate the number of moles of this salt that will dissolve in 1000 mL of water.

8.a) Write an equilibrium expression for the following reaction. (1 mark)

SO₂(g) + NO₂(g) D NO(g) + SO₃(g)

2. If the concentration of SO₂ and NO₂ gas in a flask are both 0.055mol/L, is the system at equilibrium? If not, which direction will it shift to achieve equilibrium?

(K_c = 4.8) (2 marks)