Question

What is the mass percent of chlorine in chloroform CHCl3?

Answer 1

Given: The given compound is chloroform.

To find: We have to find the mass percentage of Cl.

Solution:

The molecular formula of chloroform is $CHCl_3$.

The atomic mass of the C atom is 12.

The atomic mass of H is 1 and Cl is 35.5.

Thus, the molecular mass of chloroform is as follows-

$12 + 1 + 35.5 \times 3 \\ = 119.5$

The amount of Cl present is 35.5×3=106.5.

So, the mass percentage of Cl is as follows-

$\frac{106.5}{119.5} \times 100 \\ = 89.12$

Thus, the mass percentage of Cl in chloroform is 89.12%.