Slow oxidation of chloroform in air leads to

Options

A. Formly chloride
B. Formic acid
C. `COCl_(2)`
D. Trichloro acetic acid

Explanation

To solve the question regarding the slow oxidation of chloroform in air, we can follow these steps:

### Step 1: Identify the compound
Chloroform is a chemical compound with the formula CHCl₃. It is important to recognize that this compound contains chlorine atoms and is known for its use as a solvent and in organic synthesis.

**Hint:** Remember the molecular formula of chloroform and its common uses.

### Step 2: Understand the reaction conditions
The question specifies that the oxidation occurs slowly in the presence of air. Air primarily consists of oxygen (O₂), which is a key reactant in the oxidation process.

**Hint:** Consider what happens to organic compounds when they are exposed to oxygen over time.

### Step 3: Predict the products of oxidation
During the slow oxidation of chloroform, one of the significant products formed is phosgene (COCl₂). This compound is highly toxic and is formed when chloroform reacts with oxygen. Additionally, hydrochloric acid (HCl) is produced as a byproduct.

**Hint:** Think about common reactions of halogenated hydrocarbons with oxygen and what products may be formed.

### Step 4: Write the balanced reaction
The overall reaction can be summarized as follows:
\[ \text{CHCl}_3 + \text{O}_2 \rightarrow \text{COCl}_2 + \text{HCl} \]
This indicates that chloroform reacts with oxygen to produce phosgene and hydrochloric acid.

**Hint:** Balancing chemical equations helps in understanding the stoichiometry of the reaction.

### Step 5: Identify the major product
Among the products formed, phosgene (COCl₂) is the major compound of interest, as it is specifically mentioned in the question. It is crucial to note that phosgene is a highly poisonous gas and has historical significance in chemical warfare.

**Hint:** Focus on the significance of the products formed, especially in terms of their toxicity and applications.

### Conclusion
Thus, the slow oxidation of chloroform in air leads to the formation of phosgene gas (COCl₂), which is the correct answer to the question.

**Final Answer:** The slow oxidation of chloroform in air leads to the formation of phosgene gas (option c).