Question

Calculate the mass percent of carbon (c) in carbon tetrachloride, (ccl4), if the molar mass of carbon tetrachloride is 153.8g.

Answer 1

mass percent of carbon (c) in CCl₄ = mass of C/mass of CCl₄
                                                        = 12 x 100/153.8 = 7.8%

Answer 2

Answer: The mass percent of carbon in carbon tetrachloride is 7.8 %.

Explanation:

In $CCl_4$, there are 1 carbon atoms and 4 chlorine atoms.

To calculate the mass percent of element in a given compound, we use the formula:

$\text{Mass percent of carbon}=\frac{\text{Mass of carbon}}{\text{Molar mass of carbon tetrachloride}}\times 100$

Mass of carbon = 12 g

Mass of carbon tetrachloride = 153.8 g

Putting values in above equation, we get:

$\text{Mass percent of carbon}=\frac{12}{153.8}\times 100=7.80\%$

Hence, the mass percent of carbon in carbon tetrachloride is 7.8 %.