Question

Which of the following statement regarding $PC{l}_3$ is false?

• A. $PC{l}_3$ acts as a reducing agent when treated with $S{O}_3$ and conc. $H_{2}S{O}_4$​
• B. $PC{l}_3$ does not react with organic compounds
• C. $PC{l}_3$ is a colourless oily liquid
• D. $PC{l}_3$ boils at $347K$

Answer 1

The correct option is B $PC{l}_3$ does not react with organic compounds

Phosphorus trichloride is widely used as an important reagent in organic chemistry for replacing hydroxyl groups by chlorine atoms in organic reactions. For example, ethanol reacts with phosphorus trichloride to form chloroethane and phosphorous acid.
$3C{H}_{3}C{H}_{2}OH+PC{l}_3\to 3C{H}_{3}C{H}_{2}Cl+H_{3}P{O}_3$