Question

The boiling point of ethyl alcohol is 78.6°C. Explain it on the Kelvin scale.

Answer 1

Boiling point:

1. The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the atmospheric pressure of the liquid's environment.
2. At this temperature, the liquid is transformed into vapor.

Ethyl alcohol:

1. The most well-known alcohol is ethanol, often known as ethyl alcohol.
2. It is the kind of alcohol found in alcoholic beverages.
3. Ethanol has the chemical formula ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$..
4. Yeasts naturally make ethanol when they digest carbohydrates.

Kelvin scale:

1. A temperature scale with an absolute zero below which temperatures do not exist

Representation on the Kelvin scale:

Given:

The boiling point of ethyl alcohol = $78.6°\mathrm{C}$.

We know that,

$K=̊C+273$

So, $K=78.6+273$

$=351.6K$

This shows us that on the Kelvin scale ethyl alcohol will boil at $351.6\mathrm{K}$