(c) The absolute temperature (Kelvin scale) is related to the temperature tc on the Celsius scale by tc = T – 273.15. Why do we have in this relation, and not 273.16? (d) What is the temperature of the triple-point of water on an absolute scale whose unit interval size is equal to that of the Fahrenheit scale?

Solution:

(iii) The relationship exists because the melting point of ice equates to on the Kelvin scale, and the triple point of water corresponds to on the Kelvin scale.

(iv) We know that,

The following is the relationship between the Fahrenheit scale and the Absolute scale:

For another set of and

Subtracting Equation (1) and (2):

For,

For the triple point temperature , the temperature on the new scale