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Show your solution. 1. Calculate AH for the reaction 4 NH3 (a) + 5 02 (g) -4 NO (g) + 6 H2O (g), from the following data. AH = -180.5 kJ N2 (g) + 02 (g) - 2 NO (g) N2 (g) + 3 H2 (g) - 2 NH3 (g) 2 H2 (g) + 02 (g) - 2 H2O (g) AH = -91.8 kJ AH = -483.6 kJ 2 Find OUS E

Show your solution. 1. Calculate AH for the reaction 4 NH3 (a) + 5 02 (g) -4 NO (g) + 6 H2O (g), from the following data. AH = -180.5 kJ N2 (g) + 02 (g) - 2 NO (g) N2 (g) + 3 H2 (g) - 2 NH3 (g) 2 H2 (g) + 02 (g) - 2 H2O (g) AH = -91.8 kJ AH = -483.6 kJ 2 Find OUS E

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please answer all the questions in learning tasks 1 and 2.
Learning Task 4: 1. Calculate AH for the reaction 4 NH3 (g) + 5 02 (g) → 4 NO (g) + 6 H2O (g), from the following data. AH = -180.5 kJ Show your solution. N2 (g) + 02 (g) 2 NO (g) N2 (g) + 3 H2 (g) - 2 NH3 (g) 2 H2 (g) + 02 (g) 2 H2O (g) AH = -91.8 kJ AH = -483.6 kJ 2. Find aH° for the reaction 2H2(g) + 2C(s) + 02(g) C2H5OH(I), using the following thermochemical data. AH = -875 kJ C2H5OH (I) + 2 02 (g) - 2 CO2 (g) + 2 H2O (I) C (s) + 02 (g) → CO2 (g) H2 (g) + ½ O2 (g) → H2O (1) AH = -394.51 kJ AH = -285.8 kJ 3. Calculate AH for the reaction CH4 (g) + NH3 (g) → HCN (g) + 3 H2 (g), given: N2 (g) +3 H2 (g) 2 NH3 (g) C (s) + 2 H2 (g) → CH4 (g) H2 (g) + 2 C (s) + N2 (g) -→ 2 HCN (g) AH = +270.3 kJ AH = -91.8 kJ AH = -74.9 kJ 4. Calculate DH for the reaction 2 Al (s) + 3 C12 (g) 2 AICI3 (s) from the following data. 2 Al (s) + 6 HCI (aq) → 2 AICI3 (aq) + 3 H2 (g) AH = -1049. kJ HCI (g) → HCI (ag) H2 (g) + C12 (g) → 2 HCI (g) AICI3 (s) → AICI3 (aq) AH = -74.8 kJ/mole AH = -1845. kJ AH = -323. kJ/mole
Transcribed Image Text:Learning Task 4: 1. Calculate AH for the reaction 4 NH3 (g) + 5 02 (g) → 4 NO (g) + 6 H2O (g), from the following data. AH = -180.5 kJ Show your solution. N2 (g) + 02 (g) 2 NO (g) N2 (g) + 3 H2 (g) - 2 NH3 (g) 2 H2 (g) + 02 (g) 2 H2O (g) AH = -91.8 kJ AH = -483.6 kJ 2. Find aH° for the reaction 2H2(g) + 2C(s) + 02(g) C2H5OH(I), using the following thermochemical data. AH = -875 kJ C2H5OH (I) + 2 02 (g) - 2 CO2 (g) + 2 H2O (I) C (s) + 02 (g) → CO2 (g) H2 (g) + ½ O2 (g) → H2O (1) AH = -394.51 kJ AH = -285.8 kJ 3. Calculate AH for the reaction CH4 (g) + NH3 (g) → HCN (g) + 3 H2 (g), given: N2 (g) +3 H2 (g) 2 NH3 (g) C (s) + 2 H2 (g) → CH4 (g) H2 (g) + 2 C (s) + N2 (g) -→ 2 HCN (g) AH = +270.3 kJ AH = -91.8 kJ AH = -74.9 kJ 4. Calculate DH for the reaction 2 Al (s) + 3 C12 (g) 2 AICI3 (s) from the following data. 2 Al (s) + 6 HCI (aq) → 2 AICI3 (aq) + 3 H2 (g) AH = -1049. kJ HCI (g) → HCI (ag) H2 (g) + C12 (g) → 2 HCI (g) AICI3 (s) → AICI3 (aq) AH = -74.8 kJ/mole AH = -1845. kJ AH = -323. kJ/mole
Learning Task 2: . Finy (50) milliliters of water at 60 °C is added to 75 ml of water at 30 °C in a coffee cup calorimeter. The resulting mixture was observed to hgve a temperature of 40 °C, What is the calorimeter constant? 2. A student transferred 50.0 ml 1.00 M HCLinto a coffee-cup calorimeter, which had a femperature of 25.5 °C. He then added 50.0 ml 1.00 M NgÔH, which also had a temperature of 25.5 °C, and stirred ine mixture quickly. The resulting solution was found to have a temperature of 32.5 °C. The calorimeter constant for the coffee-cup calorimeter used was 15.0 J/ °C. Calculate the heat of reaction. S. Five (5.00) grams of an unknown compound was dissolved in 75.0 mL of water with an inifial femperature of 22.5 °C contained in a coffee-cup calorimeter. Upon the compound's dissolution, the final temperature of the resulting solution was 33.2 °C. The calorimeter used had a calorimeter constant of 200 J/ °C. What is the heat of solution of the compound? Assuming the compound is sodium hydroxide (NAOH), what is the heat of solution in kJ per mol?
Transcribed Image Text:Learning Task 2: . Finy (50) milliliters of water at 60 °C is added to 75 ml of water at 30 °C in a coffee cup calorimeter. The resulting mixture was observed to hgve a temperature of 40 °C, What is the calorimeter constant? 2. A student transferred 50.0 ml 1.00 M HCLinto a coffee-cup calorimeter, which had a femperature of 25.5 °C. He then added 50.0 ml 1.00 M NgÔH, which also had a temperature of 25.5 °C, and stirred ine mixture quickly. The resulting solution was found to have a temperature of 32.5 °C. The calorimeter constant for the coffee-cup calorimeter used was 15.0 J/ °C. Calculate the heat of reaction. S. Five (5.00) grams of an unknown compound was dissolved in 75.0 mL of water with an inifial femperature of 22.5 °C contained in a coffee-cup calorimeter. Upon the compound's dissolution, the final temperature of the resulting solution was 33.2 °C. The calorimeter used had a calorimeter constant of 200 J/ °C. What is the heat of solution of the compound? Assuming the compound is sodium hydroxide (NAOH), what is the heat of solution in kJ per mol?
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