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A calorimeter contains 16.0 mL of water at 14.5 °C. When 2.20 g of X (a substance with molar mass of 82.0 g/mol ) is added, it dissolves via the reaction X(s) + H2O(1)→X(aq) and the temperature of the solution increases to 25.5 °C Calculate the enthalpy change, AH, for this reaction per mole of X. Assume that the specific heat of the resulting solution is equal to that of water [4.18 J/(g.°C)1, that density of water is 1.00 g/mL, and that no heat is lost to the calorimeter itself, nor to the surroundings. Express the change in enthalpy in kilojoules per mole to three significant figures. > View Available Hint(s) Vη ΑΣφ ? AH = kJ/mol Submit Part B Consider the reaction C12H22O11(s) + 1202 (g)→12CO2 (g)+11H2O(1) in which 10.0 g of sucrose, C12H22011, was burned in a bomb calorimeter with a heat capacity of 7.50 kJ/°C. The temperature increase inside the calorimeter was found to be 22.0 °C. Calculate the change in internal energy, AE, for this reaction per mole of sucrose. Express the change in internal energy in kilojoules per mole to three significant figures. • View Available Hint(s) Πνα ΑΣ φ

A calorimeter contains 16.0 mL of water at 14.5 °C. When 2.20 g of X (a substance with molar mass of 82.0 g/mol ) is added, it dissolves via the reaction X(s) + H2O(1)→X(aq) and the temperature of the solution increases to 25.5 °C Calculate the enthalpy change, AH, for this reaction per mole of X. Assume that the specific heat of the resulting solution is equal to that of water [4.18 J/(g.°C)1, that density of water is 1.00 g/mL, and that no heat is lost to the calorimeter itself, nor to the surroundings. Express the change in enthalpy in kilojoules per mole to three significant figures. > View Available Hint(s) Vη ΑΣφ ? AH = kJ/mol Submit Part B Consider the reaction C12H22O11(s) + 1202 (g)→12CO2 (g)+11H2O(1) in which 10.0 g of sucrose, C12H22011, was burned in a bomb calorimeter with a heat capacity of 7.50 kJ/°C. The temperature increase inside the calorimeter was found to be 22.0 °C. Calculate the change in internal energy, AE, for this reaction per mole of sucrose. Express the change in internal energy in kilojoules per mole to three significant figures. • View Available Hint(s) Πνα ΑΣ φ

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
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Part A A calorimeter contains 16.0 mL of water at 14.5 °C. When 2.20 g of X (a substance with a molar mass of 82.0 g/mol ) is added, it dissolves via the reaction X(s) + H2O(1)→X(aq) and the temperature of the solution increases to 25.5 °C Calculate the enthalpy change, AH, for this reaction per mole of X. Assume that the specific heat of the resulting solution is equal to that of water [4.18 J/(g.°C)1, that density of water is 1.00 g/mL, and that no heat is lost to the calorimeter itself, nor to the surroundings. Express the change in enthalpy in kilojoules per mole to three significant figures. • View Available Hint(s) ν ΑΣφ ΔΗ- kJ/mol Submit Part B Consider the reaction C12H22O11 (s) +1202 (g)→12CO2 (g)+11H2O(1) in which 10.0 g of sucrose, C12H22011, was burned in a bomb calorimeter with a heat capacity of 7.50 kJ/°C. The temperature increase inside the calorimeter was found to be 22.0 °C. Calculate the change in internal energy, AE, for this reaction per mole of sucrose. Express the change in internal energy in kilojoules per mole to three significant figures. • View Available Hint(s) ΑΣφ ? AE = kJ/mol
Transcribed Image Text:Part A A calorimeter contains 16.0 mL of water at 14.5 °C. When 2.20 g of X (a substance with a molar mass of 82.0 g/mol ) is added, it dissolves via the reaction X(s) + H2O(1)→X(aq) and the temperature of the solution increases to 25.5 °C Calculate the enthalpy change, AH, for this reaction per mole of X. Assume that the specific heat of the resulting solution is equal to that of water [4.18 J/(g.°C)1, that density of water is 1.00 g/mL, and that no heat is lost to the calorimeter itself, nor to the surroundings. Express the change in enthalpy in kilojoules per mole to three significant figures. • View Available Hint(s) ν ΑΣφ ΔΗ- kJ/mol Submit Part B Consider the reaction C12H22O11 (s) +1202 (g)→12CO2 (g)+11H2O(1) in which 10.0 g of sucrose, C12H22011, was burned in a bomb calorimeter with a heat capacity of 7.50 kJ/°C. The temperature increase inside the calorimeter was found to be 22.0 °C. Calculate the change in internal energy, AE, for this reaction per mole of sucrose. Express the change in internal energy in kilojoules per mole to three significant figures. • View Available Hint(s) ΑΣφ ? AE = kJ/mol
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