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Equilibrium K c and K P. At a temperature of 700 K, the equilibrium constant is 3.164 x 10 3 for the following reaction: C 2 H 4 (g) + H 2 (g) ↔ C 2 H.

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Presentation on theme: "Equilibrium K c and K P. At a temperature of 700 K, the equilibrium constant is 3.164 x 10 3 for the following reaction: C 2 H 4 (g) + H 2 (g) ↔ C 2 H."— Presentation transcript:

1 Equilibrium K c and K P

2 At a temperature of 700 K, the equilibrium constant is 3.164 x 10 3 for the following reaction: C 2 H 4 (g) + H 2 (g) ↔ C 2 H 6 (g) What will be the equilibrium concentration of ethene if the concentration of H 2 is 0.0619 M and the concentration of C 2 H 6 is 1.055 M? 1.2.45 x 10 -12 M 2.1.98 x 10 -7 M 3.5.39 x 10 -3 M 4.0.197 M 5.1.53 x 10 3 M

3 The equilibrium constant of the following reaction for the decomposition of phosgene at 25 o C is 4.282 x 10 -2. COCl 2 (g) ↔ CO(g) + Cl 2 (g) What is the concentration of COCl 2 when the concentrations of both products are 5.90 x 10 -3 M? 1..0126 M 2..09198 M 3.1.28 x 10 -6 M 4.3.97 x 10 -5 M 5.8.13 x 10 -4 M

4 Which of the following represents the correct equilibrium expression for the synthesis of carbon monoxide? 2C(s) + O 2 (g) ↔ 2CO(g) 1.K c = [CO] 2 /([C] 2 [O 2 ]) 2.K c = [C] 2 [O 2 ] / [CO] 2 3.K c = [O 2 ] / [CO] 2 4.K c = [CO] 2 / [O 2 ] 5.K c = [CO] /([C][O 2 ])

5 Determine the value of K c for the following reaction: 2NO 2 (g) ↔ 2NO(g) + O 2 (g) K p = 6.76 x 10 -5 1.6.23 x 10 -8 2.1.80 x 10 -6 3.1.18 x 10 -5 4.5.69 x 10 -4 5.0.0361

6 Predict the effect that decreasing the pressure will have on the following reaction system. H 2 (g) + Cl 2 (g) ↔ 2HCl(g) 1.more HCl will be formed 2.more H 2 and Cl 2 will form 3.it will speed up the reaction, but the relative amounts of substances won’t change 4.it will slow down the reaction, but the relative amounts of substances won’t change 5.it is impossible to predict

7 Predict the effect that decreasing the pressure will have on the following reaction system. 3O 2 (g) ↔ 2O 3 (g) 1.more O 2 will be formed 2.more O 3 will be formed 3.it will speed up the reaction, but the relative amounts of substances won’t change 4.it will slow down the reaction, but the relative amounts of substances won’t change 5.it is impossible to predict

8 Predict the effect that increasing the pressure will have on the following reaction system. 2H 2 O 2 (aq) ↔ 2H 2 O(l) + O 2 (g) 1.more H 2 O and O 2 will be formed 2.more H 2 O 2 will be formed 3.it will speed up the reaction, but the relative amounts of substances won’t change 4.it will slow down the reaction, but the relative amounts of substances won’t change 5.it is impossible to predict

9 What will be the effect on the following reaction system if copper(II) chloride is added? 2Al(s) + 3Cu 2+ (aq) ↔ 3Cu(s) + 2Al 3+ (aq) 1.more solid copper and aluminum ions will be produced 2.more solid aluminum and copper ions will be produced 3.no effect since copper(II) chloride is not involved in the reaction 4.impossible to predict 5.the world will stop rotating about its axis, so please don’t do it

10 0.05 mol of solid HgCl 2 is vaporized in a 1.00 L evacuated flask at 680 K. What is the pressure inside the flask? 1.0.05 atm 2.1.00 atm 3.2.0 atm 4.2.8 atm 5.3.2 atm

11 Select the molecule that has all of its atoms in the same plane. 1.BCl 3 2.CH 4 3.SF 6 4.NH 3 5.PCl3


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