Question

Using figure of the text, find the boiling point of methyl alcohol at 1 atm (760 mm of mercury) and at 0.5 atm.

Answer 1

Explanation:

Methyl alcohol boiling point at 1 atm ( $760 \mathrm{mm}$ mercury) and $0.5 atm$ ;So, We decrease an x-axis perpendicular corresponding to the $760 \mathrm{mm}$ saturated pressure of vapour. It brings methyl alcohol to boiling point $650$.

The equivalent pressure in mm Hg will be $375 \mathrm{mm}$ for a pressure of $0.5 atm$. On x-axis we drop a perpendicular equivalent to the $375 \mathrm{mm}$ saturated pressure of vapour. This gives methyl alcohol to boiling point $480$.