In the Vander Waal's gas equation $(P + a/V²)(v-b) = RT$ the constant 'a' is introduced to compensate for
- A. Reduction in specific volume
- B. Inter-molecular forces
- C. Reduction in specific heat
- D. All of the above
Answer: B. Inter-molecular forces
Explanation: The term $a/V²$ accounts for the cohesive forces (inter-molecular attraction) between gas molecules.