This chemistry video tutorial provides a lecture review on gibbs free energy, the equilibrium constant K, enthalpy and entropy. it provides a list of equations and formulas as well as the appropriate units. It contains plenty of examples and practice problems.
Here is a list of topics:
1. Entropy Definition - Concepts and Examples
2. Entropy of Solids, Liquids, and Gases
3. How To Determine / Predict The Sign of the Entropy Change / Delta S for a reaction
4. Second Law of Thermodynamics - The Entropy of Universe, System and Surroundings
5. Delta G, H, T and S equation
6. Enthalpy - Heat Exchange at Constant Pressure - Endothermic and Exothermic Reactions
7. Gibbs Free Energy and the ability to do useful work
8. Spontaneity - Spontaneous and Nonspontaneous Processes
9. Delta G = 0, Reversible Process at Equilibrium
10. How To Calculate Delta G Naught Using the Equilibrium Constant K
11. Entropy of Reaction = Products - Reactants
12. Entropy = q/T heat absorbed for a reversible reaction and temperature
13. The relationship between temperature and entropy
14. Nonstandard Delta G calculations
15. Delta G - Gibbs Free Energy and Le Chatelier's Principle
16. Delta G Table / Chart - How To Determine if a Reaction is Spontaneous at Low or High Temperatures, Always Spontaneous or Nonspontaneous based on the signs of enthalpy and entropy
Best Chemistry teacher around! Thank you so much for all the videos that you provide, they are always very educational and you are helping me ace all my classes and go to medical school. I can't be more grateful, thank you.
just wanted to acknowledge how helpful your videos were to me!!! I watched relevant videos before my exams during chem 1 and chem 2 this past freshman year & got A's in both courses. thanks for being a great explainer; you are a life saver!
Your videos are extremely helpful, I think you've ousted all the tutors on youtube in terms of quality and depth of teaching. One question, at 36:00, isn't K the equilibrium constant? If so, why do you exclusively state when \DeltaG=0, "The system for the most part is at equilibrium" while not claiming that for other values of K. Regards.
Do you get paid for what you do? You are so good at what you do and I bet it takes so long to make these videos. You deserve so much support and thank you for taking the time to help us students succeed in school. I very very much appreciate your channel and your videos have helped me so much with chemistry and Calculus.
Its 1:30am and I've been reading my chemistry book all night trying to understand this stuff. And the moment I come across your video its suddenly clear as day! This is a blessing. I was about to throw in the towel on the whole class. Forget paying for college when you have youtube lol
Other Tutors:"Here lets give you 40 mins of completely useless information and then spend 30 seconds on the most basic problem related to your question. That way you learn nothing."
This Guy: "Let's tear this entire subject apart until you're able to write a BOOK on how much you nailed your text."
can u explain why u have taken hydrogen entropy in calculating entropy of the system (7:46mins) as hydrogen is in its elementary form..... but while finding gribbs energy u have not taken Hydrogen (30:06mins) ........Btw great video sir👍.. really very helpful
if you decrease the denominator, the value of the whole fraction does what? This is at 50 minutes. Not making out what you said at 50 minutes, sounds like you said the value of the whole fraction goes uum. can you clarify please
At 43:34, "the contribution of RT ln Q is negative. That means the reaction is becoming more spontaneous." By looking at the written equation, how do we know whether reactants or products are being added?
You are an incredible teacher! The content and the examples you add are extremely helpful. Thank you so much for your videos, studying for this AP exam coming up and I am so glad I found them. Here's to a fighting chance at passing!!
Although foreigners may now invest in A-shares, there is a monthly 20 percent limit on repatriation of funds to foreign countries.
Performance of A-shares.
Since its inception in 1990, including a major reform in 2002, the index has seen great fluctuations. Overall, however, it has grown along with the Chinese economy. The years 2015 to 2016 were a particularly difficult period, with a 52-week performance of -21.55 percent as of July 20, 2016.
As China grows from an emerging market to an advanced economy, there is substantial demand for Chinese equity. Stock exchange regulators continue efforts to make A-shares more broadly available to foreign investors and have them recognized by the global investing community.
In June 2017, the MSCI Emerging Markets Index announced a long-awaited decision it would add stocks to its index. According to CNBC, MSCI will add 222 China A Large Cap stocks to its benchmark emerging markets index gradually beginning in 2018. The MSCI website reveals the stocks it will list include the Bank of China, China Merchants Bank, Guotai Junan, Ping An Insurance, according to a document on Tsingtao Brewery, SAIC Motor, Suning Commerce and Spring Airlines.
Current Dividend Preference.
Participating Preferred Stock.
Convertible Preferred Stock.
Cumulative preferred stock includes a provision that requires the company to pay preferred shareholders all dividends, including those that were omitted in the past, before the common shareholders are able to receive their dividend payments.
Non-cumulative preferred stock does not issue any omitted or unpaid dividends. If the company chooses not to pay dividends in any given year, the shareholders of the non-cumulative preferred stock have no right or power to claim such forgone dividends at any time in the future.
Participating preferred stock provides its shareholders with the right to be paid dividends in an amount equal to the generally specified rate of preferred dividends, plus an additional dividend based on a predetermined condition. This additional dividend is typically designed to be paid out only if the amount of dividends received by common shareholders is greater than a predetermined per-share amount. If the company is liquidated, participating preferred shareholders may also have the right to be paid back the purchasing price of the stock as well as a pro-rata share of remaining proceeds received by common shareholders.
Significance to Investors.