The boiling point of ethanol is 78°C. What would it be in kelvin?

1 Answer
Mar 13, 2016

Answer:

#351K#

Explanation:

  1. Derive formula from the following data:
    Boiling Pt of water
    #K=373#
    #C=100^o#
    Freezing Pt of Water
    #K=273#
    #C=0^o#
  2. Write the ratio of the 2 temperature scales with the zero points and the unit sizes
    #(K-273)/(373-273)=(C-0)/(100-0)#
  3. Simplify
    #(K-273)/cancel100=C/cancel100#
  4. 100 are cancelled since these 2 scales have same unit sizes so that the formula is;
    #K-273=C#
  5. Isolate #K# by adding 273 both sides of the equation
    #K=C+273#
  6. Plug in the given data #C=78^o# to the derived formula
  7. The answer is #351K#