Question

Which of the following statements would not be true of a favorable binding equilibrium?

(A) The free-energy change is negative for the system.
(B) The concentration of the complex remains lower than the concentration of the unbound components.
(C) The complex dissociation rate is slower than the rate for component association.
(D) The binding energy for the association is large and negative.
Which of the following statements would not be true of a favorable binding equilibrium?
(A) The free-energy change is negative for the system.
(B) The concentration of the complex remains lower than the concentration of the unbound components.
(C) The complex dissociation rate is slower than the rate for component association.
(D) The binding energy for the association is large and negative.

Answer 1

The incorrect statement for a favorable binding equilibrium is that the complex concentration remains lower than that of the unbound components, when in fact it is typically higher due to the energetically favorable binding.

Step-by-step explanation:

The statement that would not be true of a favorable binding equilibrium is (B) The concentration of the complex remains lower than the concentration of the unbound components. In a favorable binding equilibrium, the complex concentration would generally be higher, as the system tends to form more of the complex because it is energetically favorable.

Statement (A) is true because a negative free-energy change (ΔG) indicates the process occurs spontaneously. Statement (C) is also true as the dissociation rate for the complex is slower than the association rate, making the complex more stable. Lastly, statement (D) aligns with a favorable equilibrium as a large negative binding energy suggests strong interaction and stability within the complex.

Answer 2

The statement that is not true for a favorable binding equilibrium is (B), which falsely claims that the complex concentration remains lower than that of its unbound components. In reality, the complex is typically found at higher concentrations in such an equilibrium. So, the correct option is B) The concentration of the complex remains lower than the concentration of the unbound components.

Step-by-step explanation:

A student asked which statement would not be true of a favorable binding equilibrium.

The answer is (B) The concentration of the complex remains lower than the concentration of the unbound components.

In a favorable binding equilibrium, the complex is generally present in higher concentrations than the unbound components because the complex is more stable and thus formed preferentially.

Regarding the other options,

(A) The free-energy change is negative for the system in a favorable binding equilibrium, signifying a spontaneous process.

(C) The complex dissociation rate being slower than the association rate indicates a stable complex, consistent with a favorable equilibrium.

(D) A large and negative binding energy further confirms the favorability of the complex formation.

Therefore, the correct option is B) The concentration of the complex remains lower than the concentration of the unbound components.