Answer:
[tex]C_4H_2F_8[/tex] is the molecular formula of the compound.
Explanation:
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 :
[tex]n=\frac{\text{molecular mass}}{\text{empirical mass}}[/tex]
We are given:
Mass of molecular formula = 200 g/mol
Mass of empirical formula of [tex]C_2HF_4[/tex] :
2 × 12 g/mol + 1 × 1 g/mol + 4 × 19 g/mol = 101 g/mol
Putting values in above equation, we get:
[tex]n=\frac{200 g/mol}{101 g/mol} =1.9 \approx 2[/tex]
Multiplying this valency by the subscript of every element of empirical formula, we get:
[tex]C_{(2\times 2)}H_{(1\times 2)}F_{(4\times 2)}=C_4H_2F_8[/tex]
[tex]C_4H_2F_8[/tex] is the molecular formula of the compound.
