Question

Calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride

Answer 1

AnsWer:

$\longrightarrow \tt{0.542}$

ExplainaTion:

•Suppose the mass of the solution =

100g.

•So, mass of C6H6=

30g

• mass ofCCl4=

100−30=70g.

•nC6H6=massmolecular mass

=30g78/mol=0.385mol

•Similary , nCl4=70g/154g/mol

=0.455mol.

•xC6H6=nC6H6nC6H6+nCCl4=

0.3850.385+0.455

•=0.458xCCl4

=1−0.458

= 0.542