Thermodynamic parameters (entropy,enthalpy,free energy,and internal energy)are given for an unknown enzyme.What result is expected for the breaking of hydrogen bonds and the exposure of hydrophobic groups from the interior during the unfolding process of a protein?
A)Entropy change,∆S,is zero.
B)Enthalpy change,∆H,is positive.
C)Entropy change,∆S,is positive.
D)Enthalpy change,∆H,is negative.

Question

Quizplus · Accepted Answer

Breaking of hydrogen bonds and exposure of hydrophobic groups from the interior during unfolding process of a protein leads to an increase in disorder in the system, which means an increase in entropy. Hence, the entropy change (∆S) is positive. The enthalpy change (∆H) can be positive or negative depending on the specific conditions of the reaction.

Thermodynamic Parameters (Entropy,enthalpy,free Energy,and Internal Energy)are Given for an Unknown