Chapter 19 - Chemical Thermodynamics: Part 1 of 6

In this video lecture I’ll teach you how to determine if a process is entropically spontaneous or nonspontaneous. I’ll also teach you the First and Second Laws of Thermodynamics, as well as how to calculate ΔS for a Phase Change and ΔS for Expanding Gases. I’ll also teach you how to determine if a process has a positive or negative ΔS value.

[thedestroyer]

Kicking myself I found your videos so late in the semester. I have my ACS final this week and your logic just clicks with me. Thanks for putting in all the work you have on these videos.

[oDjMiXo]

I'm using your videos to prepare for my chemistry 2 in fall, I love the way you lecture. Keep up the good job!

[emanuelkubatayev]

where are is a separate link for the solution ?

[zacharyddrzipac]

You mentioned that Entropy of the universe is always increasing, but what exactly are the evidences for that? Is it really scientific to regard something as true even if we have no way of measuring it(how are we going to measure the entropy of the universe and disprove the fact that there might be an ultimate outside force "cleaning our mess up" as we create entropy?). I just feel that this is a bit important because its one of reasons on if the universe will eventually end.

[iraqiha]

Hello Mr Mike

At 8:26 wouldnt the answers be in J/K ?

Since in the last bit we devide Delta Enthalpy Fusion which we have in J by Temperature in Kelvin?

[pokemeslayer]

Is there anyone I could get the answers to the problems in this video. You do an excellent job, I just want to make sure I'm doing these problems right.

[Buffarang]

I cant seem to find chapter 18, where is it?

[abdulelahalfi]

Can you please put the slides in the box see we can look at more ?

[kunaldixit]

I love you videos for sure! But is there anyway possible you can answer the questions you pose rather than making an entire video strictly for answers? It would be easier to learn if you did a whiteboard problem right after posing the question.

[fadhla]

Thanks you very much professor Christianson. Your lectures got me through chemistry 1 and are now getting through chemistry 2. I very much appreciate what you do for students throughout the world. You are the best!!

[blackeyedmitch]

Oh lawd jesus! I get it now!!! thank you:)

[omarq]

I cant seem to find the videos where you complete the problems, where can I find them?

[carloxx]

Problem Set 19, #6
of the following, the entropy of __answer (e) HI (g)___ is the largest

Work in the these chemicals can be done most easily in the solids and liquids because they have the least entropy (their molecules are well behaved and orderly). The one that requires the MOST amount of ENERGY and therefore the least amount to do work is HI because it took the most energy to get it into it's gaseous state.

[zzanggoo]

Professor, during an exothermic reaction, how does a chemical substance increase in kinetic energy? I thought by losing heat to its surroundings, the chemical substance would LOSE its kinetic energy because obviously it is losing its heat.

[ginamarielogrande]

Hey there - hope all is well, quick question - In a question that asks to solve a problem that requires PVnRt, and that states temperature and volume are kept constant (but those values are not provided), what do i substitute in?

[v.cschool]

Why aren't my other teachers as good as you, you are getting me through AP Chem over here

[cansuayer]

Hi Teacher,
I cant find the answers of questions which you asked this video.

[brendam]

for question number 6 what would the answer be? i'm not quite sure

[marlonmorales]

Hello Dr. Mike

At 8:26 the answer should be negative right?

[juliatrevorrow]

This beginning is hilarious. Love your videos