Chem 1332

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  • Words: 874
  • Pages: 5
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View Attempt 5 of unlimited Title:

Chapter 17(1)

Started:

October 16, 2009 11:35 PM

Submitted:

October 16, 2009 11:51 PM

Time spent:

00:16:13

Total score: 10/12 = 83.33% 1.

Total score adjusted by 0.0

Maximum possible score: 12

MAE 4 When the following equation is balanced using the smallest possible integers, what is the exponent of H2 in the reaction quotient expression? N2O(g) + H2(g) <=> NH3(g) + H2O(g)

Student Response 1. 4 Score:

2.

Value

Correct Answer

100%

Equals 4 (100%)

1/1

MAE 10 When the following equation is balanced using the smallest possible integers, what is the exponent of H2O in the reaction quotient expression? Al(s) + NaOH(aq) + H2O(l) <=> Na[Al(OH)4](aq) + H2(g)

Student Response 1. 0

Score:

3.

Value

Correct Answer

100%

Equals 0 (100%) Equals zero (100%)

1/1

Q1 At 100 o C, Kp for the reaction below is 60.6. In a given experiment, 0.10 atm of each component are intoduced into a container. In which direction will the reaction proceed, or is it at equilibrium? 2 NOBr(g) <=> 2 NO(g) + Br2(g)

Student Response 1. Reaction will go to the left

Value

Correct Answer

Feedback

0%

16-Oct-09 11:52 PM

View Attempt

2 of 5

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2. Reaction will go to the right

100%

3. Reaction is 0% an equilibrium Score:

4.

0/1

Chapter 9 Q 57 Consider the gas-phase reaction, N2(g) + 3 H2(g) <=> 2 NH3 (g), for which Kp = 43 at 400 K. If the mixture is analyzed and found to contain 2.1 bar of N2, 0.32 bar of H2 and 1.6 bar of NH3, describe the situation:

Student Response

Value

Correct Answer

Feedback

1. Q < K and 0% more reactants will be made to reach equilibrium. 2. Q < K and 100% more products will be made to reach equilibrium. 3. Q > K and 0% more reactants will be made to reach equilibrium. 4. Q > K and 0% more products will be made to reach equilibrium. 5. Within 1 decimal place, Q = K and the reaction is at

0%

16-Oct-09 11:52 PM

View Attempt

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equilibrium Score:

5.

1/1

Chapter 9 Change K 8 At a certain temperature, Kp for the reaction, H2(g) + Br2(g) <=> 2 HBr(g) is 517. Calculate the value of Kp for the reaction, 1/2 H2(g) + 1/2 Br2(g) <=> HBr(g)

Student Response Answer 22.7 Score:

6.

Value

Correct Answer

100%

23

1/1

Kp to Kc 2 Calculate Kc for the following reaction, 2 SO2(g) + O2(g) <=> 2 SO3(g); Kp = 66.75 at 28 o C Give your answer to 3 significant figures

Student Response Answer 1650 Score:

7.

Value

Correct Answer

100%

1,650

1/1

Kc to Kp 1 Calculate Kp for the following reaction: H2(g) + CO2(g) <=> H2O(g) + CO(g); Kc = 25.91 at 250 o C Give your answer to 3 significant figures

Student Response Answer 25.91 Score:

8.

Value

Correct Answer

100%

25.9

1/1

Type 1 3 For the following reaction, Kp = 0.445 at a given temperature. C(s) + 2 H2(g) <=> CH4(g) At equilibrium, PCH4 = 7.77. What is the equilibrium partial pressure of H2? Give your answer to 3 significant figures.

3 of 5

16-Oct-09 11:52 PM

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4 of 5

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Student Response Answer 4.18 Score:

9.

Value

Correct Answer

100%

4.179

1/1

Equilibrium Calculation 2 4 At a given temperature, 5.73 atm of Cl2 and 3.84 atm of Br2 are mixed and allowed to come to equilibrium. The equilibrium pressure of BrCl is found to be 1.234 atm. Calculate Kp for the reaction at this temperature. Cl2(g) + Br2(g) <=> 2 BrCl(g)

Student Response Answer .0924 Score:

Value

Correct Answer

100%

0.092

1/1

10. Type 3 3 Ammonium carbamate (NH2COONH4) is found in the blood and urine of mammals. At a temperature of 467 K, Kc = 0.081 for the following equilibrium: NH2COONH4(s) <=> 2 NH3(g) + CO2(g). If 10.2 g of ammonium carbamate is introduced into a 0.500 L container, what is the total pressure inside the container at equilibrium? Give your answer to 3 significant figures

Student Response Answer blah Score:

Value

Correct Answer

0%

31.35

0/1

11. Type 2 3 Ammonia can be oxidized in oxygen as shown: 4 NH3(g) + 3 O2(g) <=> 2 N2(g) + 6 H2O(g). When 0.601 mol of NH3 and 0.831 mol of O2 are placed in a 1.00 L container at a certain temperature, the equilibrium [N2] is 0.240. Calculate the value of Kc for the reaction. Give your answer to 3 significant figures.

Student Response Answer 358 Score:

Value

Correct Answer

100%

3.58E2 (3.58 × 102)

1/1

16-Oct-09 11:52 PM

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12. Combining Equations 2 Hydrocarbons are often reacted with steam to form H2, as shown for propane: C3H8(g) + 6 H2O(g) <=> 3 CO2(g) + 10 H2(g) Calculate Kp for this reaction at a particular temperature, given: 3 CO(g) + 7 H2(g) <=> C3H8(g) + 3 H2O(g) Kp = 8.05 x 1015 at this temperature CO(g) + H2O(g) <=> CO2(g) + H2(g) Kp = 0.868 at this temperature Give your answer to 3 significant figures

Student Response Answer 8.12E-17 Score:

Value

Correct Answer

100%

8.12E-17 (8.12 × 10-17)

1/1

Done

5 of 5

16-Oct-09 11:52 PM

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