`C_2H_5Clunderset(Ag_2O)overset("Moist")rarr(A)overset(Al_2O_3)underset(360^@C)rarr(B) `
`(B)overset(SCl_2)rarr(C)`
In the above sequence of reaction, identify (C)
In the above sequence of reactions. identify

Options

A. Chloretone
B. Chloropicrin
C. Mustard gas
D. Lewisite gas

Explanation

To solve the problem step by step, we will analyze the reactions given in the question.

### Step 1: Reaction of C2H5Cl with Moist Ag2O
- **Starting Compound:** C2H5Cl (ethyl chloride)
- **Reagent:** Moist Ag2O (silver oxide with moisture)

When C2H5Cl reacts with moist Ag2O, the moisture present leads to the formation of AgOH. This reaction is a substitution reaction where the chlorine atom in C2H5Cl is replaced by a hydroxyl group (OH).

**Reaction:**
\[ \text{C}_2\text{H}_5\text{Cl} + \text{Ag}_2\text{O (moist)} \rightarrow \text{C}_2\text{H}_5\text{OH} + \text{AgCl} \]

- **Product A:** C2H5OH (ethanol)

### Step 2: Dehydration of Ethanol (A) using Al2O3 at 360°C
- **Starting Compound:** C2H5OH (ethanol)
- **Reagent:** Al2O3 (alumina) at 360°C

When ethanol is heated with Al2O3 at high temperature, it undergoes dehydration, where a water molecule is eliminated. This results in the formation of ethene.

**Reaction:**
\[ \text{C}_2\text{H}_5\text{OH} \xrightarrow{\text{Al}_2\text{O}_3, 360^\circ C} \text{C}_2\text{H}_4 + \text{H}_2\text{O} \]

- **Product B:** C2H4 (ethene)

### Step 3: Reaction of Ethene (B) with SCl2
- **Starting Compound:** C2H4 (ethene)
- **Reagent:** SCl2 (sulfur dichloride)

When ethene reacts with sulfur dichloride (SCl2), it undergoes a chlorination reaction. The product formed is a dichloride compound.

**Reaction:**
\[ \text{C}_2\text{H}_4 + \text{SCl}_2 \rightarrow \text{C}_2\text{H}_2\text{Cl}_2 \]

- **Product C:** C2H2Cl2 (which is known as mustard gas)

### Final Answer
- **C is identified as:** Mustard gas (C2H2Cl2)

### Summary of Products:
- **A:** C2H5OH (ethanol)
- **B:** C2H4 (ethene)
- **C:** C2H2Cl2 (mustard gas)