Question

Calculate the mass percent of benzene (CoH₆) and carbon tetrachloride (ccl4) if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.

Options

• 75.62%

• 84.72%

• 67.84%

• 50.65%

Answer 1

84.72%

Explanation:

Mass % = `"Mass of solute"/"Mass of solution" xx 100`

Mass of benzene= 22 g mass of carbon tetrachloride

Mass % of benzene = `(22  g)/((22  g + 122  g)) xx 100` = 15.28%

Mass % of carbon tetra chloride = 100 – 15.28 = 84.72%