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Consider the following statements: On heating an elastomer under tensile load, its shrinkage 1. maximizes the enthalpy 2. maximizes the entropy 3. minimizes the free energy 4. avoids breaking Which of the above statements are correct?

Consider the following statements: On heating an elastomer under tensile load, its shrinkage 1. maximizes the enthalpy 2. maximizes the entropy 3. minimizes the free energy 4. avoids breaking Which of the above statements are correct? Correct Answer 2 and 3

Explanation:

In heating elastomer under tensile load, the entropy gets decrease because of only one possible microstate but by shrinkage, entropy gets increased because of many possible microstates.

By Helmholtz free energy equation-free energy is given by

A = U – Ts

where U = internal energy, T = temperature, S = entropy.

So, By increase in entropy free energy gets reduced.

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