Question:
The boiling points of diethyl ether, acetone and «-butyl alcohol are $35^{\circ} \mathrm{C}, 56^{\circ} \mathrm{C}$ and $118^{\circ} \mathrm{C}$ respectively. Which one of the following correctly represents their boiling points in kelvin scale?
(a) 306 K, 329 K, 391 K
(b) $308 \mathrm{~K}, 329 \mathrm{~K}, 392 \mathrm{~K}$
(c) $308 \mathrm{~K}, 329 \mathrm{~K}, 391 \mathrm{~K}$
(d) $329 \mathrm{~K}, 392 \mathrm{~K}, 308 \mathrm{~K}$.
Solution:
(c) It is the correct representation of the boiling points and is obtained by adding $273 \mathrm{~K}$ to the given temperature.