true or false
Entropy always tend to favor mixing
Mixing result in positive change in entropy
Entropy allows endothermic processes to be spontaneous
Pure liquids don't have entropy
Addition of salt to water increases entropy
Entropy is the measure of number of possible states of a system of about equivalent energy.
What problems do you have in understand this?
True or False:
1. Entropy always tends to favor mixing:
- True. Entropy is a measure of the level of disorder or randomness in a system. Mixing different substances increases the disorder or randomness, therefore increasing the entropy.
2. Mixing results in a positive change in entropy:
- True. As mentioned before, mixing increases disorder, which leads to an increase in entropy. So mixing generally results in a positive change in entropy.
3. Entropy allows endothermic processes to be spontaneous:
- False. Entropy alone does not determine whether a process is spontaneous or not. The spontaneity of a process depends on both the change in entropy and the change in enthalpy (heat) of the system. A spontaneous endothermic process requires not only an increase in entropy, but also a decrease in enthalpy.
4. Pure liquids don't have entropy:
- False. All substances, including pure liquids, have entropy. Entropy is a fundamental property of matter and is present in all systems.
5. Addition of salt to water increases entropy:
- True. When salt is dissolved in water, it breaks apart into individual ions, which increases the randomness and disorder of the system. This increase in disorder leads to an increase in entropy.
6. Entropy is the measure of the number of possible states of a system of about equivalent energy:
- True. Entropy is a measure of the number of microstates (possible arrangements) a system can have, given its energy. It describes the level of disorder or randomness in a system.