100 thoughts on “Molecular, Ionic, and Net Ionic Equations

  1. Thankyou so much saved my life you explain it so well. I got a chem benchmark mark so i figured that i should figure it out rather than guess from what me teacher taught

  2. Shouldn't the net ionic be Pbl(subscript 2) not 2Pbl(subscript 2). Not sure where the 2 coefficient comes from. Thanks! 🙂

  3. Thank you so much. My chemistry professor had screwed me up and made it more complicated than it was supposed to be. You made it much simpler so thank you!

  4. On your net ionic equation, where you have Pb + 2I –> 2PbI2 shouldn't it say (s) after the product instead of (aq) since we were talking about a precipitate?  

  5. As a fellow chemistry teacher, I appreciate using your videos as additional resources.  They are great!  However, there are two errors in this video.  The net ionic equation should show only 1 mole of lead II iodide (should not have a coefficient of 2 in the equation).  Also, the descriptor for the ppt is incorrect and should be listed as (s) and not (aq).  Love your videos 🙂

  6. Thank you so much for making these videos! I probably would have failed Chem 124 and Cell and Molecular Biology if it wasn't for all the helpful videos you've produced. 🙂

  7. seriously ur one of my favorite people, thanks for being such an awesome teacher! people like me really appreciate someone walking you through it 🙂

  8. Why didn't you write lead nitrate as "lead (II) nitrate"? This was really helpful, don't get me wrong, but I just got confused there and I went searching for nomenclature videos to help me understand how to write formulas.

  9. hi,
    first and for most, thank you for all your videos, they are very helpful. i have a question. how do we know on 5:40 that PBI2 is a solid?

  10. Thank you so much! I wasn't understanding this concept in class, and found this video at home. After watching it, I now understand the concept I was not understanding without hiring a tutor and saving my grade. Again, thanks for the well developed and helpful video!

  11. I don't understand how the lead iodine became aqueous in the net ionic equation, also how is that equation balanced? To me it's saying that there's 4 iodine in the product compared to 2 in the reactant, along with 2 lead compared to 2

  12. Hello Sir,
    what type of Ionic reaction would this be:
    Na2CO3 + 2H[+] > 2Na[+] + CO2 + H2O

    I'm not sure if I balanced that right.

    Also, what is the state (l, s, g, aq) of each compound?
    Na2CO3 (?) + 2H[+] (?) > 2Na[+] (?) + CO2 (?) + H2O (?)

    Thank you.

  13. does anyone know when he does ionic equation he just keeps PbI2 (do not break into Pb^+2 and I2 ), does anyone know why? please Help me out TT^TT

  14. How do you magically get 2PbI2 from 1Pb and 2I? Also, how do remove spectator ions with different coefficients?

  15. I am pretty sure there are two mistakes for the net ionic equation:

    1.
    Pb2+ + 2I- –> 2PbI2 does not make sense, it is not balance. Should it be:

    Pb2+ + 2I- –> PbI2

    2.
    Since PbI2 is a precipitate, it should be PbI2(s). Every equation except for the net ionic equation write that correctly, but the net ionic equation writes it as PbI2(aq).

    I am not trying to be a jerk about this, but I just wanted to let you know. If I am mistaken, could you please explain why? Thank you.

  16. i always end up watching this guy for one reason or another…strangely, over a wide variety of subjects…how does he know so much useful stuff? Hmm…I will stay in school…

  17. Thank you so much for the life-saving video. But I am still uncertain how you know that PbI2 is a solid, not KNO3. By that, I mean how do you know that KNO3 are spectators ions to cancel out?

  18. Thank you so much! I have a chemistry test tomorrow and I didn't understand anything about ionic equations, but after watching this video everything is much clearer. Thank you!

  19. For your Net Ionic Equation, shouldn't you Lead Iodide say (s) for solid instead of (aq) because it's the precipitate? Also so do you have to balance your reaction in the molecular equation and then again in the net ionic equation?

    Edit: Forget that last question, in the net ionic equation, the 2 next to the Lead Iodide is just a typo right? (It's already balanced without it).

  20. how the fuck are you supposed to do this without any helping material for Ammonium phosphate and zinc nitrate. im really fucking stuck

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