The essential condition for the feasibility of a reaction is that __________ .

Options

A. The reaction should be exothermic
B. The entropy of products must be larger than that of reactants
C. The reaction should be accompanied with free energy decrease
D. The reaction should possess high activation energy

Answer

To determine the essential condition for the feasibility of a reaction, we need to consider the concept of Gibbs free energy (ΔG). Here’s a step-by-step solution:

### Step 1: Understand Gibbs Free Energy
Gibbs free energy is a thermodynamic potential that helps predict whether a reaction will occur spontaneously at constant temperature and pressure.

### Step 2: Identify the Condition for Spontaneity
A reaction is considered spontaneous if it can occur without the input of additional energy. The criterion for spontaneity is based on the change in Gibbs free energy (ΔG).

### Step 3: Determine the Sign of ΔG
For a reaction to be spontaneous, the change in Gibbs free energy (ΔG) must be negative:
- If ΔG < 0, the reaction is spontaneous (feasible).
- If ΔG > 0, the reaction is non-spontaneous (not feasible).
- If ΔG = 0, the system is at equilibrium.

### Step 4: Conclusion
Thus, the essential condition for the feasibility of a reaction is that the change in Gibbs free energy (ΔG) should be negative.

### Final Answer
The essential condition for the feasibility of a reaction is that ΔG should be negative.