Question

calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachlorid​

Answer 1

Answer:-

Let the mass of the Solution be 100g

Thus

• Mass of Benzene=30g
• Mass of CCl$_4$

Moles of Benzene:-..

$\\ \sf\longmapsto \dfrac{30}{78}$

$\\ \sf\longmapsto 0.38moles$

Moles of Carbon Tetrachloride:-

$\\ \sf\longmapsto \dfrac{70}{154}$

$\\ \sf\longmapsto 0.45moles$

Now

$\\ \sf\longmapsto Mole\: Fraction (Benzene)=\dfrac{0.38}{0.38+0.45}$

$\\ \sf\longmapsto 0.461$