Severus Snape explains that if you have the molar mass of a compound and the empirical formula of a compound you can determine the molecular formula of a compound. Suppose you have a compound which has an empirical formula of C2H3O and molar mass of 86 g/mol. What is the compounds molecular formula

Respuesta :

Answer:

The molecular formula of the compound :[tex]C_4H_6O_2[/tex]

Explanation:

The empirical formula of the compound =[tex]C_2H_3O[/tex]

The molecular formula of the compound =[tex]C_{2n}H_{3n}O_n[/tex]

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 = 86 g/mol

Mass of empirical formula = 43 g/mol

Putting values in above equation, we get:

[tex]n=\frac{86g/mol}{43g/mol}=2[/tex]

The molecular formula of the compound :

[tex]C_{2\times 2}H_{3\times 2}O_2=C_4H_6O_2[/tex]