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

2. จงหาค่า AH ของปฏิกิริยานี้ จากข้อมูลที่กำหนดให้ 2C (s) + 2 H,0 (g) → CH, (g) + CO,(g) Determine the standard enthalpy change for this reaction from the following standard enthalpies of reaction: (1) C(s) + H,O (g) → CÓ (g) + H, (g) AH° = 131.3kJ (2) CO (g) + H2O (g) → CO2 (g) + H2 (g) ΔΗΟ = -41.2 kJ (3) CH, (g) + H,O (g) → 3H, (g) + CO (g) AH° = 206.1kJ ชื่อ-สกุล .วันที่ เลขที่ เรหัส.. (0202104) จงหาค่า AH และ As ของปฏิกิริยานี้ จากข้อมูลที่กำหนดให้ 3 ปฏิกิริยาการสังเคราะห์ด้วยแสงเกิดขึ้นดังสมการ 6 CO, (g) + 6 H,0 (1) CH2O6 (S) + 6 0, (g) กำหนดค่าที่สภาวะมาตรฐานของ AH และ S ของสารแต่ละตัว ดังนี้ AH°, (kJ mol-') s° (JK-1 mol-') สาร | CH,206 (s) -1,273 212 O, (g) 205 2/2 CO, (g) -393 214 H,0 (1) -285 70
Determine the enthalpy change, AH, in kJ, for the following reaction: CS2 (1) + 302 (g) --> CO₂ (g) + 2SO2 (g) given the following thermochemical equations: C(s) + O₂ (g) --> CO₂ (g) ΔΗ = 91.2 kJ S (s) + O₂ (g) --> SO₂ (g) ΔΗ = -382 kJ C(s) + 2S (g) --> CS₂ (1) Do not report units in your answer. Report your answer to one decimal place and include the correct sign in your answer. AH = 82.6 kJ
Given that enthalpy of formation of the several compounds: C(s)+O2(g)>CO2(g);AH=-393.5kJ S(s)+O2(g)→SO2(g);AH=-296.8kJ C(s)+2S(s)→CS2(1);AH=+87.9 kJ Determine the enthalpy of combustion reaction of carbon disulfide!
find the change in enthalpy for the reaction below. given the following reactions and change in enthalpy values: 2 C2H4O(I) + 3 O2(g) --> 2 CO2(g) + 3 H2O(I) ▲H= ??
Use standard heats of formation to calculate the change in enthalpy for the following reactions: a. 2C(s,graphite) + O2(g) → 2CO(g) b. 2H2O2(l) → 2H2O(l) + O2(g) c. 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)
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.
12.00 g of Compound with molecular formula C4h8 are burned in a constant-pressure calorimeter containing 15.00 kg of water at 25 °C. The temperature of the water is observed to rise by 8.603 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the 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. calorimeter itself.)
15. Use the following reactions for which the reaction enthalpies are given to determine the reaction enthalpy of: Given: N₂H40) + 2 H₂O2(1)→ N2(g) + 4H₂O N₂H4(1) + 3 O2(g) → 2 NO2(g) + 2 H₂O(g) H₂O(1) + 1/2O2(g) → H₂O2(1) 1/2 N2(g) + O2(g) → NO₂(g) H₂O → H₂O ΔΗ° = _466 kJ AH°= 98.0 kJ AH° = 34.0 kJ AH° = 44.0 kJ
Substance SiO,(s) SICLO H,O) HCIE) AH°, (kJ/mol) -910.7 -687.0 -285.83 -92.307 Calculate the standard enthalpy change for the following reaction: SICI4(1) + 2H20(1) → SIO2 (s) + 4HCI (g)
Given the standard enthalpy changes for the following two reactions: (1) N2(g) + 202(g)N204(g) AH° = 9.2 kJ (2) 2N20(g)2N2(g) + O2(g) AH° = -164.2 kJ what is the standard enthalpy change for the reaction: (3) 2N½0(g) + 302(g)- →2N2O4(g) AH° = ? kJ
Hydrobromic acid (HBr) is a commonly used acid for adding bromine to organic compounds. As bromine makes for an easily replaceable substituent, these bromine precursors are a necessary part of a vast amount of organic eynthesis, Calculate the reaction enthalpy for the synthesis of HBr according to H2(g) + Bra)2Br(g) Use the following information: NH3(g) +HBr(g) → NHABr(s) AH =-188.32 kJ Na(g) + 3H2(g) → 2NH3(g) AH = -92.22 kJ N2(g) + 4H2(g) + Br2(1) → 2NHABr(s) AH =-541.66 kJ a. AH =-728 kmol b. AH =-1010.52 KJjmol C. AH =-826.08 KJ/mol d. AH =728 kJ/mol e. AH = -257.24 kJ/mol Clear my choice