Lecture 41/24/07 Quiz Friday. Manipulating K Multiply the equation by a constant Reverse equation Add equations.

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Lecture 41/24/07 Quiz Friday

Manipulating K Multiply the equation by a constant Reverse equation Add equations

Multiply by a constant 2SO 2 (g) + O 2 (g) ⇄ 2SO 3 (g) K = 283 vs. SO 2 (g) + ½ O 2 (g) ⇄ SO 3 (g) K = ?

Reversing the equation 2SO 2 (g) + O 2 (g) ⇄ 2SO 3 (g) K = 283 vs. 2SO 3 (g) ⇄ 2SO 2 (g) + O 2 (g) K = ?

Adding equations N 2 (g) + O 2 (g) ⇄ 2NO (g) K 1 = 4.3 x NO (g) + O 2 (g) ⇄ 2NO 2 (g) K 2 = 6.4 x 10 9 N 2 (g) + 2O 2 (g) ⇄ 2NO 2 (g) K net = ?

Le Chatelier’s Principle system at equilibrium Disturb equilibrium Shifts system to new equilibrium Ways to disturb equilibrium

Add / Remove  Product /Reactant

Example: For the reaction, PCl 3 (g) + Cl 2 (g) ⇄ PCl 5 (g), the system is at equilibrium when [PCl 3 ] = 0.20 M, [Cl 2 ] = 0.125, [PCl 5 ] = 0.6 M. What is the new equilibrium, if the concentrations of Cl 2 is increased by M?

Volume / Total Pressure change PCl 3 (g) + Cl 2 (g) ⇄ PCl 5 (g) H 2 (g) + I 2 (g) ⇄ 2HI (g) Reduce volume  Increase volume  Add inert gas 

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