3. A particular protein heat denatures with a melting temperature Tm = 332 K with an enthalpy of unfolding, AHm = 372 kJmol-¹. (a) What is the entropy of unfolding in kJ mol-1 K-1 at Tm? (b) If ACp is 6.6 kJ mol-1 K-1, at what temperature does the free energy of unfolding (AG unfolding) have the greatest value (i.e. the native state is most stable)? (c) Calculate the value of AG and K at this temperature.

Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter10: Entropy And The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 10.64PAE
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3. A particular protein heat denatures with a melting temperature Tm = 332 K with
an enthalpy of unfolding, AHm = 372 kJmol-¹.
(a) What is the entropy of unfolding in kJ mol-1 K-1 at Tm?
(b) If ACp is 6.6 kJ mol-1 K-1, at what temperature does the free energy
of unfolding (AG unfolding) have the greatest value (i.e. the native
state is most stable)?
(c) Calculate the value of AG and K at this temperature.
Transcribed Image Text:3. A particular protein heat denatures with a melting temperature Tm = 332 K with an enthalpy of unfolding, AHm = 372 kJmol-¹. (a) What is the entropy of unfolding in kJ mol-1 K-1 at Tm? (b) If ACp is 6.6 kJ mol-1 K-1, at what temperature does the free energy of unfolding (AG unfolding) have the greatest value (i.e. the native state is most stable)? (c) Calculate the value of AG and K at this temperature.
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