4. The standard heat of forrmation of glycerine cannot be measured directly but can be determined indirectly from other heats of reaction by applying Hess's Law. Given the following data for the combustion of carbon, hydrogen, and glycerine, C,H;O3, in oxygen: C (s) + Ó2 (g) → CO2 (g) H2 (g) + ½ O2 (g) → H2O (I) C;H3O; + 3½ O2 (g) → 3 CO2 (g) +4 H2O (1) AH=-393.5 kJ AH=-285.8 kJ AH=-1.651 x 10³ kJ Calculate the standard heat of formation of glycerine.

4. The standard heat of forrmation of glycerine cannot be measured directly but can be determined indirectly from other heats of reaction by applying Hess's Law. Given the following data for the combustion of carbon, hydrogen, and glycerine, C,H;O3, in oxygen: C (s) + Ó2 (g) → CO2 (g) H2 (g) + ½ O2 (g) → H2O (I) C;H3O; + 3½ O2 (g) → 3 CO2 (g) +4 H2O (1) AH=-393.5 kJ AH=-285.8 kJ AH=-1.651 x 10³ kJ Calculate the standard heat of formation of glycerine.

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...

See similar textbooks

Similar questions

13.00 g of Compound X with molecular formula C4H are burned in a constant-pressure calorimeter containing 25.00 kg of water at 25 °C. The temperature of the water is observed to rise by 5.657 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.) Calculate the standard heat of formation of Compound X at 25 °C. Be sure your answer has a unit symbol, if necessary, and round it to 3 significant digits. 10 Explanation Check 0/0 0.0 X 0 x10 © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy
The compound WO3(s) is utilized in the refining process of tungsten from its mineral ore. Tungsten can be produced as follows: Reaction 1: WO3(s) + 3H2(g) → W(s) + 3H2O(g) a) From the following data calculate the enthalpy of the above reaction Reaction 2: 2W(s) + 3O2(g) → 2WO3(s) ΔH = –1685.4 kJ Reaction 3: 2H2(g) + O2(g) → 2H2O(g) ΔH = –477.84 kJb) Estimate the change of internal energy for Reaction 1. c) Is Reaction 1 exothermic or endothermic?
Potassium nitrate, KNO 3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 41.8 g of KNO3 is dissolved in 277 g of water at 23.00 °C. KNO3(s) H₂O K+(aq) + NO3(aq) The temperature of the resulting solution decreases to 20.90 °C. Assume that the resulting solution has the same specific heat as • water, 4.184 J/(g · °C), and that there is negligible heat loss to the surroundings. How much heat was released by the solution? Isoln = What is the enthalpy of the reaction? AH rxn = KJ kJ/mol
2.000 g of Compound X with molecular formula C5H₁0 are burned in a constant-pressure calorimeter containing 45.00 kg of water at 25 °C. The temperature 10 of the water is observed to rise by 0.4696 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.) Calculate the standard heat of formation of Compound X at 25 °C. Be sure your answer has a unit symbol, if necessary, and round it to 3 significant digits. 0 00 X Ś x10
14.00 g of Compound X with molecular formula C,H, are burned in a constant-pressure calorimeter containing 50.00 kg of water at 25 °C. The temperature of the water is observed to rise by 3.098 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.) Calculate the standard heat of formation of Compound X at 25 °C. Be sure your answer has a unit symbol, if necessary, and round it to 3 significant digits. Ox10 ?
8.00g of Compound X with molecular formula C4H8 are burned in a constant-pressure calorimeter containing 35.00kg of water at 25°C. The temperature of the water is observed to rise by 2.501°C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.) Calculate the standard heat of formation of Compound X at 25°C. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits.
Calcium carbonate can be decomposed upon applying heat with the following equation CaCO3(s) → CaO(s) + CO2(g) ΔH = +179.5kJ How much heat will be needed to decompose 30 g of calcium carbonate? AND What size container will be required (in L) to contain the carbon dioxide generated at 25ºC and 1.2 atm?
A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. In an experiment, a 1.4710 g sample of maleic acid (C4H4O4) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1159 g of water. During the combustion the temperature increases from 22.46 to 25.59 °C. The heat capacity of the calorimeter, not including the surrounding water, was determined in a previous experiment to be 852.2 J/°C. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of maleic acid based on these data. Assuming that no energy is lost to the surroundings, what is the molar heat of combustion of maleic acid, based on these data? (in kJ/mol). C4H4O4(s) + 3O2(g) → 2 H2O(l) + 4 CO2(g) + Energy
10.00 g of Compound X with molecular formula C4H8 are burned in a constant-pressure calorimeter containing 50.00 kg of water at 25 °C. The temperature of the water is observed to rise by 2.151 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.) Calculate the standard heat of formation of Compound X at 25 °C. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits.
The first step in the production of nitric acid from ammonia involves the oxidation of NH3. 4 NH3(g) + 5 O₂ (g) → 4 NO(g) + 6 H₂O(g) 2 a Use standard enthalpies of formation from the table below to calculate the standard enthalpy change for this reaction. Species AfH (kJ/mol) NH3(g) -45.90 NO(g) +90.29 H₂O(g) -241.83 Standard enthalpy change Submit = kJ/mol-rxn
Find the molar enthalpy of combustion in kJ/mol of glucose at some temperature and pressure C6H12O6 (s) + 6 O2 (g) → 6 CO2 (g) + 6 H2O (l) given that in an experiment under the same conditions the combustion of 0.108 g of glucose raised the temperature of a calorimeter with total heat capacity C= 1.155 kJ/°C by 1.31 °C. The molar mass of glucose is 180.1 g/mol. Ignore the heat absorbed by the combustion products; assume this is negligible, and all heat went into the calorimeter itself. Give the answer with 5 or more significant figures.
5.000 g of Compound X with molecular formula C,H, are burned in a constant-pressure calorimeter containing 20.00 kg of water at 25 °C. The temperature of the water is observed to rise by 2.556 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.) Calculate the standard heat of formation of Compound X at 25 °C. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits. ? olo :