Entropy can only be decreased in a system if?

If external work is done on the system

Explanation:

The 2nd law of thermodynamics states that entropy of an isolated system can never decrease over time. An isolated system is defined as a system which does not exchange energy or matter with the surrounding (an example of isolated system is a closed box made of insulating material, which cannot exchange neither matter nor heat with the environment). In such a system, entropy can never decrease.

However, if the system is not isolated, its entropy can be decreased. In fact, if the system is not isolated, we can do external work and decrease its internal entropy.

✔ energy is added

Explanation:

i got it right on edge :) 2021

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!