Estimate the value of E°cell at 25 °C and 70 °C. Using enthalpy and entropy ideas, build a plausible explanation for the change of E°cell with temperature. ΔfH° (kJ/mol)S° (J/mol·K)H2(g)0130.6O2(g)0205.0H2O(ℓ)-285.869.95 H2(g) + ½ O2(g) ⇌ H2O(ℓ)

We have to find the Eocell at two different temperatures, and we are given with some thermodynamic data.We can easily solve this problem if we know the relation between Gibb's energy and Eocell.Thus, Eocell (T=25°C) = 1.228 VEocell(T=70°C) = 1.05 V.

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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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Estimate the value of E°_cell at 25 °C and 70 °C. Using enthalpy and entropy ideas, build a plausible explanation for the change of E°_cell with temperature.

	Δ_fH° (kJ/mol)	S° (J/mol·K)
H₂(g)	0	130.6
O₂(g)	0	205.0
H₂O(ℓ)	-285.8	69.95

H₂(g) + ½ O₂(g) ⇌ H₂O(ℓ)

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