Question

What product is obtained when chloroform reacts with oxygen in presence of light?

• A. Phosgene gas
• B. Phosphine gas
• C. Chlorine gas
• D. Hydrogen gas

Answer 1

The Correct Option is A

When chloroform \((CHCl₃)\) reacts with oxygen in the presence of light (such as ultraviolet light), it undergoes a photochemical reaction that leads to the formation of phosgene gas \((COCl₂)\). Phosgene is a toxic gas that has been historically used in chemical warfare. The reaction can be summarized as:

\(CHCl3+O2→COCl2+HCl\)

This reaction occurs due to the presence of ultraviolet light, which causes the chloroform to break down and react with oxygen.

Answer 2

When chloroform (CHCl) is exposed to oxygen in the presence of light, a reaction occurs that produces phosgene gas (COCl), which is highly toxic. This reaction happens due to the breakdown of chloroform molecules facilitated by light energy, which allows them to react with oxygen molecules.