For reversible melting of ice at `0^(@)C` and 1 atm. Pressure, the value of `Delta G` will be :-

Options

A. `lt 0` (zero)
B. `gt 0` (zero)
C. 0 (zero)
D. `oo` (infinity)

Answer

To solve the question regarding the value of Gibbs free energy (ΔG) for the reversible melting of ice at 0°C and 1 atm pressure, we can follow these steps:

### Step 1: Understand the Process
The question involves the melting of ice, which is a phase transition from solid (ice) to liquid (water). At 0°C and 1 atm pressure, this process is at equilibrium.

### Step 2: Recall the Gibbs Free Energy Concept
Gibbs free energy (ΔG) is a thermodynamic potential that can be used to predict the direction of chemical reactions and phase changes. For a process at equilibrium, the change in Gibbs free energy is defined as:

\[ \Delta G = 0 \]

### Step 3: Apply the Concept to the Given Conditions
Since the melting of ice at 0°C and 1 atm is a reversible process, it means that the system is at equilibrium. Therefore, we can conclude:

\[ \Delta G = 0 \]

### Step 4: Choose the Correct Option
Based on our analysis, the value of ΔG for the reversible melting of ice at 0°C and 1 atm pressure is 0. Thus, the correct answer is:

\[ \text{Option C: } 0 \]

### Final Answer
The value of ΔG for the reversible melting of ice at 0°C and 1 atm pressure is 0.

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