Answered: The standard enthalpy of formation of…

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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The standard enthalpy of formation of ethylbenzene is -12.5kJ mol^-1. Calculate its standard enthalpy of combustion. Use data in Data Section of Atkins Book

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Step 1

The Answer to the following question is-

Combustion reaction :

$C_{8} H_{10} + \frac{21}{2} O_{2} \to 8 C O_{2} + 5 H_{2} O$

Standard data for enthalpy from atkins:

$∆ H °_{f} (C O_{2}) = - 393.15 K J / m o l$

$∆ H °_{f} (H_{2} O) = - 285.83 K J / m o l$

$∆ H °_{f} (C_{8} H_{10}) = - 12.5 K J / m o l$

$∆ H °_{f} (O_{2}) = 0$

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