Answer:
The molecular formula [tex]PCl_{3}[/tex] is also an empirical formula.
Explanation:
Empirical formula of a compound represents the simplest positive integer ratio of constituting atoms.
Molecular formula may or may not be equal to empirical formula.
In general, if [tex]A_{x}B_{y}[/tex] is the empirical formula then molecular formula is [tex]A_{nx}B_{ny}[/tex] where n = 1, 2, 3......
Empirical formula Molecular formula
[tex]PCl_{3}[/tex] [tex]PCl_{3}[/tex]
[tex]CH_{2}[/tex] [tex](CH_{2})_{2}[/tex] or [tex]C_{2}H_{4}[/tex]
OH [tex](OH)_{2}[/tex] or [tex]H_{2}O_{2}[/tex]
[tex]CH_{2}O[/tex] [tex](CH_{2}O)_{6}[/tex] or [tex]C_{6}H_{12}O_{6}[/tex]
Hence the molecular formula [tex]PCl_{3}[/tex] is also an empirical formula.
