`CO_(2)` at 600 bar and a temperature above `T_(c) (T_(c) = 304.15 K)` is called

Options

A. super cooled gas
B. super critical fluid
C. super critical liquid
D. super cooled liquid

Explanation

To solve the question regarding the state of CO₂ at 600 bar and a temperature above its critical temperature (T_c = 304.15 K), we can follow these steps:

### Step 1: Understand Critical Temperature
- The critical temperature (T_c) is the temperature above which a gas cannot be liquefied, regardless of the pressure applied. For CO₂, T_c is given as 304.15 K.

### Step 2: Analyze Given Conditions
- The problem states that CO₂ is at a pressure of 600 bar, which is significantly higher than atmospheric pressure (1 bar).
- It is also stated that the temperature is above T_c (304.15 K).

### Step 3: Determine the State of CO₂
- When a substance is at a pressure above its critical pressure and at a temperature above its critical temperature, it is in a state known as a supercritical fluid.
- A supercritical fluid exhibits properties of both gases and liquids. It can diffuse through solids like a gas and dissolve materials like a liquid.

### Conclusion
- Therefore, CO₂ at 600 bar and a temperature above 304.15 K is referred to as a **supercritical fluid**.