Absolute alcohol can be obtained from rectified spirit

Options

A. By removing the water in it using concentrated sulphuric acid
B. By removing the water using phosphorus pentoxide
C. By distilling with the appropriate amount of benzene
D. By distilling over plenty of quick lime

Answer

C

Explanation

Absolute alcohol is 100% ethanol. Rectified spirit is a mixture with a composition of 95% ethanol and 5% water. Benzene acts as a material separation agent when it is added to ethanoVwater mixture, it changes the molecular interactions and eliminates the ethanoV water positive azeotrope.