Equilibrium Practice questions

Equilibrium Practice questions - 1.State the equilibrium...

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1. State the equilibrium expressions for the following reactions. (a) CO (g) + H 2 O (g) CO 2(g) + H 2(g) (b) 3I 2(g) + 6F 2(g) 2IF 5(g) + I 4 F 2(g) 2. The equilibrium constant for the synthesis of HBr (g) from hydrogen and bromine gas is 2.18 × 10 6 at 730 ° C. H 2(g) + Br 2(g) HBr (g) If 3.75 mol of HBr is put into a 15.0 L reaction vessel, calculate the concentration of H 2 , Br 2 , and HBr at equilibrium. 3. The K c for the reaction 2HF (g) H 2(g) + F 2(g) is 4.0. Predict the direction in which the equilibrium will shift if 3.0 mol of HF, 2.0 mol of H 2 and 4.0 mol of F 2 are put into a 5.0 L bulb. 4. At 250 ° C, the equilibrium constant for the reaction PCl 5(g) PCl 3(g) + Cl 2(g) is 0.041. The reaction is also endothermic, H = 92.5 kJ. (a) Calculate the concentration of all the substances present at equilibrium if 0.20 mol of PCl 5 is placed in a 4 L reaction vessel. (b) Predict the shift in equilibrium expected when • the temperature of the reaction mixture is increased • PCl 3 is removed from the system
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This note was uploaded on 07/06/2011 for the course SCH 4U taught by Professor White during the Spring '10 term at Beacon FL.

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Equilibrium Practice questions - 1.State the equilibrium...

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