Freon used as refrigerant is

Options

A. `CF_2=CF_2`
B. `CH_2F_2`
C. `"CCl"_2F_2`
D. `CF_4`

Answer

To answer the question "Freon used as refrigerant is?", we will go through the following steps:

### Step 1: Identify Freon
Freon is a common name for a group of chemicals used as refrigerants. The most commonly used Freon in refrigeration systems is Dichloro-Difluoro-Methane.

### Step 2: Chemical Structure
The chemical formula for Dichloro-Difluoro-Methane can be derived from its name:
- "Methane" indicates a carbon backbone (C).
- "Dichloro" indicates that two hydrogen atoms in methane (CH4) are replaced by two chlorine (Cl) atoms.
- "Difluoro" indicates that two hydrogen atoms are replaced by two fluorine (F) atoms.

Thus, the structure can be represented as:
- Start with CH4 (methane).
- Replace 2 H with 2 Cl and 2 H with 2 F.

### Step 3: Write the Chemical Formula
The resulting chemical formula after these substitutions is:
- CCl2F2 (Dichloro-Difluoro-Methane).

### Step 4: Confirm the Properties of Freon
Freon (CCl2F2) is a stable, non-flammable gas that evaporates easily. This property is essential for its function as a refrigerant, as it helps to absorb heat and maintain low temperatures in refrigeration and air conditioning systems.

### Step 5: Conclusion
Based on the above analysis, the correct answer to the question is:
- Freon used as refrigerant is CCl2F2.

### Final Answer:
Freon used as refrigerant is CCl2F2.

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