25 Responses

1. thank you!! taking the MCAT in a month and still didn’t understand this
   until this video!

2. you’re so cute.
   btw, you helped me pass my final.

3. i didnt understand why the E-cell is -4.072 …
   isnt it supposed to be E cathode – E anode?

4. Thank you so much!! This just saved my chemistry lab mark! 

5. woah you rock

6. great vid! thanks

7. thanks,you’re amazing :) 

9. Does the Na stick to the cathode or does it just hang around it?

10. I know it has been a while since this video was made, but your content is
    always incredibly easy to follow along with and quite informative. Thanks!

11. Love the clear explanations. Great for reviewing before my test! 

12. how to decide the type of electrodes, same or different? from what series ?

13. Way better than anything I could ever learn in class. Thank you soooo
    much!!!

14. How did you know the electrons are going to flow the way they did? Why were
    you able to just say immediately “therefore electrons are going to flow
    this way”

15. THANK YOU SO MUCH FOR THE VIDEO
    A quick question, since Na is 1-, why is two electrons required instead of
    1?
    And why is there two moles of Na and Cl in the half equation? 

16. Thank you very much for this video! I have a quick question though. For the
    external battery source, is that battery a voltaic cell? Would the anode be
    the negative end where the electrons are leaving?

17. I love you! Thanks for this video! Also I love your accent :)

18. Sorry if I have this totally wrong.It’s all very new to me.

19. Thank you. I appreciate that.

20. Hope that helped!

21. 1.36 is the reduction potential of chlorine, so you have to flip the number
    to get chlorine’s oxidation potential (since in this reaction it is being
    oxidized). Also, you have to take the sum of the oxidation and reduction
    potentials to find the voltage. The video explains that the voltage can’t
    be positive because electrolytic cells deal with nonspontaneous
    (unfavorable) reactions, which would indicate a negative value for E

22. Thank you :)

23. Voltage is an intensive property, which means it does not depend on the
    amount present. Therefore, you do not multiply it by the coefficients. On
    the other hand, enthalpy is an extensive property and that is why you
    always multiply enthalpy. Hope that helped :)

24. Why does the addition of a battery cause the electrons to flow in the
    opposite direction?

25. your awesomeness is awesome