Question

During winters, moisture condenses in the form of dew and can be seen on plant leaves and grass. The entropy of the system in such cases decreases as liquids possess lesser disorder as compared to gases. With reference to the second law, which statement is correct, for the above process?

• A. The randomness of the universe decreases
• B. The randomness of the surroundings decreases
• C. Increase is randomness of surroundings equals to the decrease in randomness of system
• D. The increase in randomness of the surroundings is greater as compared to the decrease in randomness of the system.

Answer 1

Answer: (D)

The increase in randomness of the surroundings is greater as compared to the decrease in randomness of the system.

Answer 2

As dew formation is spontaneous process, therefore, entropy or randomness of the universe will increase. As randomeness of the system has decreased but randomness of the surrounding will increase larger so that change is positive.