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3. A quantity of 2.00 x 10² mL of 0.862 M HCl is mixed with 2.00 x 10² mL of 0.445 M Ba(OH), in a constant-pressure calorimeter having a heat capacity of 453 J/°C. The initial temperature of the HCl and Ba(OH), solutions is the same at 20.48°C. Given that the heat of neutralization for the process H* (aq) + OH (aq) > H,O () is -56.2 kJ, what is the final temperature? Assume the specific heats of the solutions are the same as for water. 4. (After gas chapter): What volume of ethane (C,H), measured at 23°C and 752 mmHg, would be required to heat 855 g of water from 25.0°C to 98.0 °C?

3. A quantity of 2.00 x 10² mL of 0.862 M HCl is mixed with 2.00 x 10² mL of 0.445 M Ba(OH), in a constant-pressure calorimeter having a heat capacity of 453 J/°C. The initial temperature of the HCl and Ba(OH), solutions is the same at 20.48°C. Given that the heat of neutralization for the process H* (aq) + OH (aq) > H,O () is -56.2 kJ, what is the final temperature? Assume the specific heats of the solutions are the same as for water. 4. (After gas chapter): What volume of ethane (C,H), measured at 23°C and 752 mmHg, would be required to heat 855 g of water from 25.0°C to 98.0 °C?

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter4: Energy And Chemical Reactions
Section: Chapter Questions
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Question #3. Thank you! The book states the answer should be 25.03 Celsius. I just don't know how to get that answer.

1. Which of the following would be a system that has work done on it by the surrounding? a. CH, (g) b. CO (g) c. N,O, (g) e. СО (g) + 2H, (g) CO, (g) CI, (g) > N,0, (g) H,O (g) 2CO (g) COCI, (g) 0,(g) CO, (g) + H, (g) 2. When 1.00 L of 2.00 M Na,SO, solution at 30.0°C is added to 2.00 L of 0.750 M Ba(NO,), solu- tion at 30.0°C in a calorimeter, a white solid (BASO,) forms. The temperature of the mixture in- creases to 42.0°C. Assuming that the specific heat capacity of the solution is 6.37 J/g°C and that the density of the final solution is 2.00 g/mL, calculate the enthalpy change per mole of BaSO, formed. 3. A quantity of 2.00 x 10² mL of 0.862 M HCl is mixed with 2.00 x 10² mL of 0.445 M Ba(OH), in a constant-pressure calorimeter having a heat capacity of 453 J/°C. The initial temperature of the HCl and Ba(OH), solutions is the same at 20.48°C. Given that the heat of neutralization for the process H* (aq) + OH (aq) > H,O (1) is –56.2 kJ, what is the final temperature? Assume the specific heats of the solutions are the same as for water. 4. (After gas chapter): What volume of ethane (C,H), measured at 23°C and 752 mmHg, would be required to heat 855 g of water from 25.0°C to 98.0 °C? 5. Determine AH for the reaction C,H, (g) + Cl, (g) > C,H_Cl, (I), given the following 4 information: 2 Cl, (g) + 2 H,O (1) C,H̟CI, (1) + H,O (1) AH =-202.5 kJ 4 HCl (g) + O, (g) 2 HCI (g) + C,H, (g) + ½ O, (g) AH =-319.6 kJ 4 6. Methanol, a potential fuel source, can be prepared by heating CO and H, under pressure in the presence of a catalyst. CO (g) + 2 H, (g) CH,OH (1) AH = ???
Transcribed Image Text:1. Which of the following would be a system that has work done on it by the surrounding? a. CH, (g) b. CO (g) c. N,O, (g) e. СО (g) + 2H, (g) CO, (g) CI, (g) > N,0, (g) H,O (g) 2CO (g) COCI, (g) 0,(g) CO, (g) + H, (g) 2. When 1.00 L of 2.00 M Na,SO, solution at 30.0°C is added to 2.00 L of 0.750 M Ba(NO,), solu- tion at 30.0°C in a calorimeter, a white solid (BASO,) forms. The temperature of the mixture in- creases to 42.0°C. Assuming that the specific heat capacity of the solution is 6.37 J/g°C and that the density of the final solution is 2.00 g/mL, calculate the enthalpy change per mole of BaSO, formed. 3. A quantity of 2.00 x 10² mL of 0.862 M HCl is mixed with 2.00 x 10² mL of 0.445 M Ba(OH), in a constant-pressure calorimeter having a heat capacity of 453 J/°C. The initial temperature of the HCl and Ba(OH), solutions is the same at 20.48°C. Given that the heat of neutralization for the process H* (aq) + OH (aq) > H,O (1) is –56.2 kJ, what is the final temperature? Assume the specific heats of the solutions are the same as for water. 4. (After gas chapter): What volume of ethane (C,H), measured at 23°C and 752 mmHg, would be required to heat 855 g of water from 25.0°C to 98.0 °C? 5. Determine AH for the reaction C,H, (g) + Cl, (g) > C,H_Cl, (I), given the following 4 information: 2 Cl, (g) + 2 H,O (1) C,H̟CI, (1) + H,O (1) AH =-202.5 kJ 4 HCl (g) + O, (g) 2 HCI (g) + C,H, (g) + ½ O, (g) AH =-319.6 kJ 4 6. Methanol, a potential fuel source, can be prepared by heating CO and H, under pressure in the presence of a catalyst. CO (g) + 2 H, (g) CH,OH (1) AH = ???
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