CHM152GW2 Su09 crib

Chemistry (MasteringChemistry Series)

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CHM 152 Group Work 2 Crib 1. Answer the following for the reaction of NO gas with chlorine gas to produce NOCl gas. a. Write out the balanced reaction, and the K c and K p expressions. 2 NO(g) + Cl 2 (g) ' 2 NOCl(g) K c = ] Cl [ [NO] NOCl] [ 2 2 2 K p = 2 Cl 2 NO 2 NOCl P P P b. Calculate K p and K c at 25.0 o C given the pressure of NO gas is 1.56 atm, chlorine gas is 0.887 atm, and NOCl gas is 3.45 atm. K p = 2 2 56) {0.887)(1. (3.45) = 5.51398 = 5.51 K c = 1 - 298)] [(.08206)( 5.51398 = 135 2. Phosphorus pentachloride decomposes into phosphorus trichloride and chlorine gas. What is the initial concentration of phosphorus pentachloride if at equilibrium the concentration of chlorine gas is 0.500M? Given: K c = 10.00 (Hint: ICE table) PCl 5 ' PCl 3 + Cl 2 I x 0 0 C -0.500 +0.500 +0.500 E (x-0.500) (0.500) (0.500) 10.00 = (0.500) 2 / (x-0.500) 10.00 x – 5 = 0.25 x = 0.525 M = [PCl 5 ] 3. Once a system has reached equilibrium, are the following true or false? a.
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CHM152GW2 Su09 crib - CHM 152 Group Work 2 Crib 1 Answer...

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