A sample of solid glutaric acid (C5H3O4) that weighs 1.245 g is burned in an excess of Ignition wires heat oxygen to Thermometer CO2(g) and H20() in a constant-volume calorimeter at 25.00 °C. The temperature rise is observed to be Stirrer 2.190 °C. The heat capacity of the calorimeter and its contents is known to be 9.242×10³ J K-!. sample (a) Write and balance the chemical equation for the combustion reaction. Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank. Water Based on this experiment: (b) Assuming that AH° is approximately equal to AE, calculate the standard enthalpy change for the combustion of 1.000 mol of glutaric acid to CO2(g) and H20(). Insulated outside chamber Sample dish Burning sample Steel bomb kJ mol-1 Combustion (bomb) calorimeter. (c) Calculate the standard enthalpy of formation per mole of glutaric acid, using the following for the standard enthalpies of formation of CO2(g) and H2O(g). AH° H20 (2)=-285.83 kJ mol-! ; AHº CO2(g) =-393.51 kJ mol-1 kJ mol-!

A sample of solid glutaric acid (C5H3O4) that weighs 1.245 g is burned in an excess of Ignition wires heat oxygen to Thermometer CO2(g) and H20() in a constant-volume calorimeter at 25.00 °C. The temperature rise is observed to be Stirrer 2.190 °C. The heat capacity of the calorimeter and its contents is known to be 9.242×10³ J K-!. sample (a) Write and balance the chemical equation for the combustion reaction. Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank. Water Based on this experiment: (b) Assuming that AH° is approximately equal to AE, calculate the standard enthalpy change for the combustion of 1.000 mol of glutaric acid to CO2(g) and H20(). Insulated outside chamber Sample dish Burning sample Steel bomb kJ mol-1 Combustion (bomb) calorimeter. (c) Calculate the standard enthalpy of formation per mole of glutaric acid, using the following for the standard enthalpies of formation of CO2(g) and H2O(g). AH° H20 (2)=-285.83 kJ mol-! ; AHº CO2(g) =-393.51 kJ mol-1 kJ mol-!

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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