`Au(s) hArr Au (l)`
above mentioned equilibrium is fovoured at

Options

A. High pressure, lowtemperature
B. High pressure, high temperature
C. Low pressure, high temperature
D. Low pressure, low temperature

Explanation

To determine the conditions under which the equilibrium `Au(s) ⇌ Au(l)` is favored, we need to analyze the effects of pressure and temperature on the reaction.

### Step-by-step Solution:

1. **Understanding the Reaction**:
The equilibrium involves the conversion of solid gold (Au) to liquid gold. This process is a phase change where a solid is converted into a liquid.

2. **Volume Change**:
When a solid converts to a liquid, the volume typically increases. In general, solids occupy less volume than their liquid counterparts.

3. **Effect of Pressure**:
According to Le Chatelier's principle, if the volume increases (as it does when a solid turns into a liquid), the equilibrium will shift in the direction that opposes the change. Since increasing pressure favors the side with less volume, we need to decrease the pressure to favor the forward reaction (solid to liquid).

4. **Evaluating Pressure Conditions**:
- High pressure would not favor the conversion of solid to liquid since it would push the equilibrium back towards the solid state.
- Therefore, we can rule out conditions with high pressure.

5. **Effect of Temperature**:
The conversion of solid to liquid is an endothermic process, meaning it requires heat. According to Le Chatelier's principle, increasing the temperature will favor the endothermic direction of the reaction.

6. **Evaluating Temperature Conditions**:
- For an endothermic reaction, increasing the temperature shifts the equilibrium to the right (towards the products, which in this case is the liquid).
- Thus, high temperature is required to favor the conversion of solid to liquid.

7. **Conclusion**:
To favor the equilibrium `Au(s) ⇌ Au(l)`, we need low pressure and high temperature. Therefore, the correct condition is low pressure and high temperature.

### Final Answer:
The equilibrium `Au(s) ⇌ Au(l)` is favored at low pressure and high temperature.

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