3. The complete combustion of benzoic acid, CH&O2 is represented below 2 C,H6O2 (s) + 15 O2 (e) → 14 CO2 (e) + 6 H2O 1) a) Write the thermochemical equation for the above reaction. AH = - 6456.4 kJ b) Identify if the reaction is exothermic or endothermic and explain how you know. c) Draw a fully labelled potential energy diagram for the above reaction.

3. The complete combustion of benzoic acid, CH&O2 is represented below 2 C,H6O2 (s) + 15 O2 (e) → 14 CO2 (e) + 6 H2O 1) a) Write the thermochemical equation for the above reaction. AH = - 6456.4 kJ b) Identify if the reaction is exothermic or endothermic and explain how you know. c) Draw a fully labelled potential energy diagram for the above reaction.

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter6: Thermochemistry

Section: Chapter Questions

Problem 94E: The complete combustion of acetylene, C2H2(g), produces 1300. kJ of energy per mole of acetylene...

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The complete combustion of acetylene, C2H2(g), produces 1300. kJ of energy per mole of acetylene consumed. How many grams of acetylene must be burned to produce enough heat to raise the temperature of 1.00 gal water by 10.0c if the process is 80.0% efficient? Assume the density of water is 1.00 g/cm3
Sulfur dioxide gas reacts with oxygen, O2(g), to produce SO3(g). This reaction releases 99.0 kJ of heat (at constant pressure) for each mole of sulfur dioxide that reacts. Write the thermochemical equation for the reaction of 2 mol of sulfur dioxide, and then also for the decomposition of 3 mol of sulfur trioxide gas into oxygen gas and sulfur dioxide gas. Do you need any other information to answer either question?
9.104 An engineer is using sodium metal as a cooling agent in a design because it has useful thermal properties. Looting up the heat capacity, the engineer finds a value of 28.2 J mol-l °C-l. Carelessly, he wrote this number down without units. As a result, it was later taken as specific heat. (a) What would he the difference between these two values? (b) Would the engineer overestimate the ability of sodium to remove heat from the system or underestimate it because of this error? Be sure to explain your reasoning.
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