Question

1. Find the molecular formula of a compound that has a molar mass of 216.8 g and an empirical formula of PdH 2 .

Answer 1

Answer: The molecular formula for the given organic compound is
`Pd_2H_4`

Step-by-step explanation:

The empirical formula for the given compound is
`PdH_2`

For determining the molecular formula, we need to determine the valency which is multiplied by each element to get the molecular formula.

The equation used to calculate the valency is :

`n=\frac{\text{molecular mass}}{\text{empirical mass}}`

We are given:

Mass of molecular formula = 216.8 g

Mass of empirical formula = 108.4 g

Putting values in above equation, we get:

`n=(216.8)/(108.4)=2`

Multiplying this valency by the subscript of every element of empirical formula, we get:

`PdH_2* 2)}=Pd_2H_4`

Thus, the molecular formula for the given organic compound is
`Pd_2H_4`