Equilibrium mixture of ice and water is held at constant pressure. On heating some ice melts. For the system

Options

A. (a) Entropy increases
B. (b) Free energy increases
C. (c) Free energy decreases
D. (d) Entropy decreases

Explanation

To solve the problem regarding the equilibrium mixture of ice and water held at constant pressure, we need to analyze the changes that occur when some ice melts upon heating. Here’s a step-by-step solution:

### Step 1: Understand the Initial Condition
We start with an equilibrium mixture of ice (solid) and water (liquid) at a constant pressure. This means that both phases are present and in balance at a specific temperature (0°C for ice and water).

**Hint:** Remember that at equilibrium, the rates of melting and freezing are equal.

### Step 2: Heating the System
...