Question

Which of the following processes involves an increase in entropy?

condensing water vapor
melting gold bars
filtering grounds from coffee
freezing popsicles

Answer 1

melting gold bars is the process that involves an increase in entropy

Answer 2

Answer: melting gold bars

Step-by-step explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

1. Condensing water vapor: gaseous phase is being converted to liquid phase, thus the randomness is decreasing.

2. Melting gold bars: Solid phase is being converted to liquid phase, thus the randomness is increasing.

3. filtering grounds from coffee: The randomness is decreasing as some particles are being removed.

4. freezing popsicles: liquid phase is converting to solid phase, thus the randomness is decreasing.