8) The equilibrium constant K for a certain chemical reaction has been determined experimentally and is described by the following equation between 400 K and 600 K: In (K) = A + BT- + CT-² , where A, B, and C are constant with the values A = -1.76, B = -1368 K, and C = 1.1 × 10° K². Calculate the standard reaction enthalpy A,H® and the standard reaction entropy A,S® at T = 500 K. Hint: It will be useful to start from the expression for the derivative of In (K) with respect to 1/T: dIn (K) d(1/T) A,H° (van't Hoft equation) R to fnd Δ, Η9.
8) The equilibrium constant K for a certain chemical reaction has been determined experimentally and is described by the following equation between 400 K and 600 K: In (K) = A + BT- + CT-² , where A, B, and C are constant with the values A = -1.76, B = -1368 K, and C = 1.1 × 10° K². Calculate the standard reaction enthalpy A,H® and the standard reaction entropy A,S® at T = 500 K. Hint: It will be useful to start from the expression for the derivative of In (K) with respect to 1/T: dIn (K) d(1/T) A,H° (van't Hoft equation) R to fnd Δ, Η9.
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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Transcribed Image Text:8) The equilibrium constant K for a certain chemical reaction has been determined
experimentally and is described by the following equation between 400 K and 600 K:
In (K) = A + BT¬ + CT-² ,
where A, B, and C are constant with the values A = -1.76, B = -1368 K, and
C = 1.1 x 105 K?. Calculate the standard reaction enthalpy A,H° and the
standard reaction entropy A,Sº at T = 500 K.
Hint: It will be useful to start from the expression for the derivative of In (K) with
respect to 1/T:
d In (K)
d(1/T)
4,H°
(van't Hoft equation)
R
to find A, Hº.
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