Question

Calculate the mass percentage of benzene (C H and carbon tetrachloride CCL) if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.​

Answer 1

The mass percentage is the percentage of material present in the total mass of the compound.

We have,

Mass of Benzene = 22g

Mass of Carbon Tetrachloride = 122 g

Formula Used: Mass% of X=(Mass of X/ Mass of Total Mixture) × 100

Total Mass of Mixture = 22g + 122g = 144g.

Mass% of Benzene:

$\frac{22}{144}*100\\\\=\frac{2200}{144} \\\\=15.28$%.

Mass% of CCl4:

$\frac{122}{144}*100\\\\=\frac{12200}{144}\\\\=84.72$%.

The mass percentage of Benzene is 15.28% and of Carbon Tetrachloride is 84.72%.