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11 Nov 2019
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Chem 126 Exam 2 March S, 201s Part A: 19 questions worth 76 points What is the equilibrium constant expression K, for the reaction M,Ol) ,0B) 2. Calculate k, for the reaction 4A(g) 3C(8)+ D(g) at 400 C if K, at 400°C for this reaction is 2.1x 10 a. 2.1 x 10 c. 0.70 d. 1.2 ALA e. 3.8 x 10* 3. Choose the correct option for the following reaction at equilibrium? CO(g)+ H,0(g)CO.(g)+ H2(g) a. [CO,J [H,] because they are in a 1:1 mole ratio in the balanced equation. b. The total concentration of reactants is equal to the total concentration of the products C. The total concentration of the reactants is greater than the total concentration of the products. d. The total concentration of the products is greater than the total concentration of the reactants, e. Impossible to tell without the value of Ke 1.25 moles of NOCl were placed in a 2.50 L reaction chamber at 427â. After equilibrium was reached, 1.10 moles of NOCI remained. Calculate the equilibrium concentration of cl 4. 2" 2NOCI(g) 2 2NO(g) CI2(g) K 5.6 x 104 a. 0.44 M so b. 0.03 M c. 0.15 M S.o d. 0.06 M e. 0.075 M Consider the reaction A(g)+ B(g) z 2AB (g), Kp-3x 10%. 3.0 mol of A is introduced to a 3.0 L flask containing 2.0 mol of B. What is the concentration of AB at equilibrium? a. 0.667M b. 0.286M c. 1.67M d. 1.33M e. 0.80M
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Chem 126 Exam 2 March S, 201s Part A: 19 questions worth 76 points What is the equilibrium constant expression K, for the reaction M,Ol) ,0B) 2. Calculate k, for the reaction 4A(g) 3C(8)+ D(g) at 400 C if K, at 400°C for this reaction is 2.1x 10 a. 2.1 x 10 c. 0.70 d. 1.2 ALA e. 3.8 x 10* 3. Choose the correct option for the following reaction at equilibrium? CO(g)+ H,0(g)CO.(g)+ H2(g) a. [CO,J [H,] because they are in a 1:1 mole ratio in the balanced equation. b. The total concentration of reactants is equal to the total concentration of the products C. The total concentration of the reactants is greater than the total concentration of the products. d. The total concentration of the products is greater than the total concentration of the reactants, e. Impossible to tell without the value of Ke 1.25 moles of NOCl were placed in a 2.50 L reaction chamber at 427â. After equilibrium was reached, 1.10 moles of NOCI remained. Calculate the equilibrium concentration of cl 4. 2" 2NOCI(g) 2 2NO(g) CI2(g) K 5.6 x 104 a. 0.44 M so b. 0.03 M c. 0.15 M S.o d. 0.06 M e. 0.075 M Consider the reaction A(g)+ B(g) z 2AB (g), Kp-3x 10%. 3.0 mol of A is introduced to a 3.0 L flask containing 2.0 mol of B. What is the concentration of AB at equilibrium? a. 0.667M b. 0.286M c. 1.67M d. 1.33M e. 0.80M
Nestor RutherfordLv2
28 Apr 2019