Page 1 of 1

### memorize

Posted: Tue Feb 11, 2020 10:23 pm
Do we have to memorize any of the entropies' of substances, such as water or co2?

### Re: memorize

Posted: Tue Feb 11, 2020 11:18 pm
I believe that the standard entropies of substances will be given to us, if needed. It doesn't seem like we need to memorize them.

### Re: memorize

Posted: Wed Feb 12, 2020 11:06 am
There are no entropies given on the constant sheet, so they will provide any entropies you need in the question.

### Re: memorize

Posted: Wed Feb 12, 2020 1:26 pm
most entropies will be given to us, but it can be known that a perfect crystalline structure or molecule has a delta S of 0 J/K (though in reality, this is not possible, as seen with the 3rd law of thermodynamics)

### Re: memorize

Posted: Sat Feb 15, 2020 10:49 pm
Entropy values will be given to us; we won't need to memorize them.

### Re: memorize

Posted: Sat Feb 15, 2020 10:58 pm
The standard entropies will be given to us and we do not have to memorize them.

### Re: memorize

Posted: Sun Feb 16, 2020 12:51 am
I'm pretty sure most entropy, enthalpy, and gibbs free energy values will be given to us, either in the problem or the constants/values/equations sheets. And I mean, know that ΔH of all elements in their standard states is 0, and know the trends for ΔH, ΔS, and ΔG (<0 is spontaneous, decrease in entropy, >0 is not spontaneous, increase in entropy, =0 neither fwd/rvs rxn is favored aka equilibrium).

### Re: memorize

Posted: Sun Feb 16, 2020 12:54 am
Entropy values will be given to us. If Dr. Lavelle wants us to know specific values he'll probably tell us.

### Re: memorize

Posted: Sun Feb 16, 2020 2:02 am
Entropy values are given to us.

### Re: memorize

Posted: Sun Feb 16, 2020 10:33 am
We are given the entropy values we need to know for the exam on the equation sheet as they did for the midterm. We will not know or use the entropy values that are not proved on the equation sheet.

### Re: memorize

Posted: Sun Feb 16, 2020 11:11 am
We were given the entropy values on the midterm so I'm assuming the same will happen for the rest of the tests from here on out.

### Re: memorize

Posted: Sun Feb 16, 2020 12:25 pm
No, they give us any needed entropy values but you should know how entropy will change in general. ex. entropy increases if a liquid becomes a gas

### Re: memorize

Posted: Sun Feb 16, 2020 8:17 pm
I think such numbers like that one will always be given to us.

### Re: memorize

Posted: Sun Feb 16, 2020 8:31 pm
I believe that every constant we may ever need will be provided for us on every test and exam. However, some equations may not be and we may have to derive them.

### Re: memorize

Posted: Sun Feb 16, 2020 8:32 pm
After taking the midterm, I'm pretty certain he'll provide us with any constants we may need for an exam.