21. Given the following two equationsCH5OH(1) + 3 O2(8)2 СO2(g) + 3 Н20(1)AH = -1370 kJС-Н(8) + 3 О2(s)→ 2 CO2(g) + 2 H2O(1)AH = -1410 kJCalculate AH for the reactionC2H4(8) + H2O(1)CH5OH(I)ΔΗ-a. -2780 kJb. 2780 kJс. 40 kJd. 40 kJ

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Answered: 21. Given the following two equations…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter5: Thermochemistry

Section: Chapter Questions

Problem 5.46QE

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A student performing a calorimetry experiment combined 100.0 ml. of 0.50 M HCI and 100.0 ml. of 0.50 M NaOH in a StyrofoamTM cup calorimeter. Both solutions were initially at 20.0 C, but when the two were mixed, the temperature rose to 23.2 C (a) Suppose the experiment is repeated in the same calorimeter but this time using 200 mL of 0.50 M HCl and 200.0 ml of 0.50 M NaOH. WIII the AT observed be greater than, less than, or equal to that in the first experiment, and why? (b) Suppose that the experiment is repeated once again in the same calorimeter, this time using 100 mL of 1.00 M HCI and 100.0 ml. of 1.00 M NaOH. Will the T observed be greater than, less than, or equal to that in the first experiment, and why?
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21. Given the following two equations С-Н-ОН(1) + 3 O2(8) → 2 CO2(8) + 3 H2O(1) AH = -1370 kJ СЭНА(8) + 3 Ог(8) → 2 CO2(8) + 2 H2O(1) AH = -1410 kJ Calculate AH for the reaction C2H4(8) + H2O(1) → CH$OH(1) ΔΗ-? %3D a. -2780 kJ b. 2780 kJ c. -40 kJ d. 40 kJ