Question

What is molar heat capacity (C)?

(a) C = Specific heat * Molecular weight of gas

(b) C = Specific heat + Molecular weight of gas

(c) C = Specific heat – Molecular weight of gas

(d) C = \(\frac{Specific\, heat}{Molecular\, weight\, of\, gas} \)

This question was posed to me by my school principal while I was bunking the class.

My enquiry is from I.C Engine in portion Internal Combustion Engine of Farm Machinery

Answer 1

Right option is (a) C = Specific heat * Molecular weight of gas

Easy explanation: Molar heat capacity is defined as the amount of heat required to raise temperature of 1 mole of gas through 1°C. For gases, there are two values of molar heats, i.e., molar heat at constant pressure (Cp) and molar heat at constant volume (Cv).