Question

Calculate the mass percent of benzene and carbon tetrachloride. If

22 gram of benzene is dissolved in 122 gram of carbon

tetrachloride. (Molar mass of carbon tetrachloride = 142 and Molar

mass of benzene = 78)​

Answer 1

In general Mass % of X=

(Mass of X / Mass of total mixture) ×100

Mass of the total mixture= 22+122=144g

Mass % of benzene= ( 22 / 144 )×100=15.28%

Mass % of CCl 4 =( 122/144 )×100=84.72%