Classify each of theses changes as a positive or negative change in entropy of a sample of this green gas.

A) chlorine gas condense to a liquid = -
B) chlorine gas is heated in a container= +
C) chlorine gas deposits on a cold surface= -

I agree with your -s and +

Thank you!!

You are welcome.

To determine whether each change represents a positive or negative change in entropy, we need to understand the concept of entropy and its relationship with different processes.

Entropy is a measure of the disorder or randomness in a system. In general, if a process increases the disorder or randomness of a system, it is considered to have a positive change in entropy (+). Conversely, if a process decreases the disorder or randomness, it has a negative change in entropy (-).

Let's apply this understanding to the given changes:

A) Chlorine gas condenses to a liquid:
The process of condensation involves the gas molecules coming closer together and forming a more ordered and structured liquid phase. As the disorder or randomness decreases, this change represents a negative change in entropy (-).

B) Chlorine gas is heated in a container:
When the gas is heated, the gas molecules gain energy and move more rapidly, increasing their random motion and disorder. As the disorder or randomness increases, this change represents a positive change in entropy (+).

C) Chlorine gas deposits on a cold surface:
When the gas molecules come into contact with a cold surface, their random motion slows down, and they adhere to the surface, becoming more ordered and structured. As the disorder or randomness decreases, this change represents a negative change in entropy (-).

In summary:
A) Chlorine gas condensing to a liquid has a negative change in entropy (-).
B) Heating chlorine gas in a container has a positive change in entropy (+).
C) Chlorine gas depositing on a cold surface has a negative change in entropy (-).