Question

Apoisonous gas is obtained on oxidation of \(\mathrm{CHCl}_{3}\). $$ 2 \mathrm{CHCl}_{3}+\mathrm{O}_{2} \stackrel{\text { Light }}{\longrightarrow} \text { Gas }+2 \mathrm{HCl} $$ The gasis (A) CO (B) \(\mathrm{CO}_{2}\) (C) \(\mathrm{Cl}_{2}\) (D) \(\mathrm{COCl}_{2}\)

Short answer

The poisonous gas obtained on oxidation of CHCl3 is \(\mathrm{COCl}_{2}\). The correct answer is (D).

Step-by-step solution

Write down the balanced chemical equation

The given balanced chemical equation is: \[2 \mathrm{CHCl}_{3}+\mathrm{O}_{2} \stackrel{\text { Light }}{\longrightarrow}\text{Gas} + 2 \mathrm{HCl}\] Step 2: Determine the gas produced by oxidation of CHCl3

Determine the gas produced by oxidation of CHCl3

Upon oxidation of CHCl3, one could expect one of the carbon-containing products to be either CO or CO2. However, as the poisonous gas must also contain chlorine, this points towards the product being \(\mathrm{COCl}_{2}\). Step 3: Confirm the balanced equation

Confirm the balanced equation

Now, let's confirm the balanced equation with the identified gas \(\mathrm{COCl}_{2}\): \[2 \mathrm{CHCl}_{3}+\mathrm{O}_{2} \stackrel{\text { Light }}{\longrightarrow} 2\text{ }\mathrm{COCl}_{2}+2 \mathrm{HCl}\] The balanced equation is confirmed as: 1. There are the same number of Carbon, Hydrogen, Chlorine, and Oxygen atoms on both the left and right sides of the equation. 2. The identified poisonous gas contains a Carbon, and two Chlorines, which are present in each of CHCl3 on the left-hand side of the equation. Step 4: Select the correct answer

Select the correct answer

The poisonous gas obtained on oxidation of CHCl3 is \(\mathrm{COCl}_{2}\). The correct answer is (D).