First, calculate for the scaling of the new setting through the given measurements for oleic acid. The difference between the actual freezing point and boiling point of oleic acid is calculated below.
difference = boiling point - freezing point
difference = (360°C - 13°C) = 347°C
As per the new setting, this is equivalent only to 120°C. It can be deduced that for the actual 347°C, only 120°C is reflected. Hence the ratio is,
ratio = 347°C/120°C = 347/120
For water with freezing point of 0°C.
difference from 13°C = -13°C
This would be equivalent to:
-13°C x (120/347) = -4.49°C
ANSWER: -4.5°C
