4. Assume you are characterizing an enzyme that catalyzes the following reaction

Question

4. Assume you are characterizing an enzyme that catalyzes the following reaction,
A <---->B + C
By measuring equilibrium concentrations, you determine that Keq values for the reaction are
346 M, 378 M and 417 M at 25oC, 30oC, and 37oC, respectively.
a. Using Excel or similar program, tabulate the data, make a van’t Hoff plot with trendline and its
equation, and use it to determine deltaHo´ and deltaSo´ for the reaction.
b. What is G°´ for this reaction at 25°C?
c. Is this reaction driven by entropy, enthalpy, or both? Explain.
d. Is the answer to part c in agreement with the type of chemical reaction you are studying?

Thank you SOOO much to whoever answers my question!! I have no idea how to even go about this!

Explanation / Answer

G° value at 25°C
G° = -RTlnKeq
    = -(2.303 * 8.314 * 298 * log(346))
    = -14.4846 KJ
( lnk = 2.303 k)

G° is a negative value, it indicates that the reaction is spontaneous

enthalpy (Ho < 0) and entropy (So > 0) then the reaction is sponatneous, both can driven the G°.

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