arrhenius equation example

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  • Опубліковано 17 гру 2024

КОМЕНТАРІ • 80

  • @danielmontalvo4295
    @danielmontalvo4295 6 років тому +3

    The best. Not only did you show the chemistry portion but you show the mathematical portion step-by-step. Great job

  • @chery_dominique
    @chery_dominique 11 років тому +1

    You are so well spoken & easy to understand. You're awesome, thank you for this video!!!

  • @elizabethlainez1402
    @elizabethlainez1402 9 років тому +1

    I have searched all over for something like this and you have done it!! Thank you so much!!!!! life saver.

  • @allencat1
    @allencat1 13 років тому

    OMG OMG OMG OMG, YOU ARE absolutely the best at this! I have searched the web for an explaination and cant find one that makes sense, till now. THANK YOU FROM THE BOTTOM OF MY HEART!!!

  • @3mr3FLA
    @3mr3FLA 10 років тому +1

    This video came in very handy at 1 o'clock in the morning. thank you.

  • @jrichar23
    @jrichar23 13 років тому

    Thank you, thank you, thank you!!! I got my question right all because of your post and it's the only one on youtube that actually shows the entire math, which I needed desperately! Thanks again!!!

  • @amgreenliv
    @amgreenliv 10 років тому +2

    Linda, ln( 2.52E-5 / 3.16E-3 ) actually comes out to -4.83148, not -4.83945, as shown, resulting in a small error in the final value for Ea. But apart from this, a nice worked example for those meeting the Arrhenius equation for the first time.

  • @ConnectSparrows
    @ConnectSparrows 10 років тому +2

    Thank you for much Linda for your video and efforts. This has given me clarity on the equation. Very handy when I have a test tomorrow!

  • @Febreezy
    @Febreezy 9 років тому +20

    confused: my textbook and another video has the formula ln (k2/k1)

    • @milanmelvin5616
      @milanmelvin5616 3 роки тому

      I know I'm kind of off topic but does anyone know a good place to stream new tv shows online ?

    • @watsonelijah9693
      @watsonelijah9693 3 роки тому

      @Milan Melvin i use FlixZone. You can find it on google =)

    • @OroFlows
      @OroFlows Рік тому +1

      Im sure after 7 years you've figured this out but for those just reading the question the formula in the video is correct as is BUT if you switch K1/K2 for K2/K1 then you have to add a negative sign to the formula to the right. They both equal the same thing. The point is not to get negative activation energy for the problem. For added pointless complexity you can also switch the 1/T2 - 1/T1 for 1/T1 - 1/T2 and then take the negative back off 😵‍💫

  • @melissarainchild
    @melissarainchild 6 років тому +2

    Where were you when I was in highschool? Thank you for explaining. NOW...I get it... :)

  • @ashleygiroux-pitz3477
    @ashleygiroux-pitz3477 10 років тому

    So amazingly done, I've watched a lot of vids on youtube and yours are incredibly easy to follow. The fact that i'm even taking the time to comment should say a lot. I NEVER COMMENT =)

  • @Berndogification
    @Berndogification 13 років тому

    Same here, Thank you thank you thank you! I was almost in tears trying to do this from the book!!! This helped me solve the equations in there!

  • @alexichristidis
    @alexichristidis 10 років тому +10

    shouldnt it be in(k2/k1) not in(k1/k2)?

    • @squirt40
      @squirt40 10 років тому +4

      you're right. She has them flipped wrong

    • @JorgeLopez-ow6qe
      @JorgeLopez-ow6qe 10 років тому +5

      that is irrelevant as long as k2/k1=1/T1-1/T2 OR K1/K2=1/T2-1/T1 as long as the T1 and K1 correspond to each other as well as the K2 and T2 the equation is right, just depends what way is more comfortable for you or which one youre use to more

    • @Maddr33
      @Maddr33 10 років тому +1

      I did it both ways and got the same answer?? weird

  • @hooosarah
    @hooosarah 6 років тому +2

    Very helpful video! I have a question; if we have more than 2 data, always we choose the first and the last one, or it depends on the value?

  • @ibchemvids
    @ibchemvids 4 роки тому

    Thanks I needed another problem for my exam !

  • @barchueolduss9296
    @barchueolduss9296 5 років тому +1

    the K1/K2 is kinda strange to me, 'cause my instructors and many text books have used the opposite. why?

  • @slleach5
    @slleach5 12 років тому

    Excellent Video!!

  • @baraskparas9559
    @baraskparas9559 3 роки тому

    Great presentation and explanation. Even though some dogma states the Ea doesn't change with T many Arrhenius plots show a curve at either end tending towards each axis possibly reflecting that heat can be a catalyst in some endergonic reactions.

  • @leonarddelores
    @leonarddelores 9 років тому

    Thank you so much!! You did an amazing job at explaining this complete problem. I understand it now!!

  • @xxFabulous24xx
    @xxFabulous24xx 9 років тому

    You explain very well, Thank you !

  • @kickingrusty9869
    @kickingrusty9869 10 років тому +6

    Thanks for the video. For future videos you may want to speak more into the mic-- even with volume all the way up we can barely hear you

    • @Maddr33
      @Maddr33 10 років тому +2

      I can hear crystal clear

  • @christinechikoti2243
    @christinechikoti2243 Рік тому

    Been of great help thank you 🙏

  • @latinquesadilla7
    @latinquesadilla7 12 років тому

    YOU'RE A BEAUTIFUL CREATURE

  • @meoun1
    @meoun1 9 років тому +1

    omg thank you for posting this!!

  • @jjildo
    @jjildo 9 років тому +1

    from what i understand if you choose k1 to be on the top, the first 1/T should be T1 as well. Correct me if I'm wrong I just know I wrote in my notes and circled it to remember. Confused..

  • @sicilianotoronto
    @sicilianotoronto 5 років тому

    why is it some texts show k2/k1 and a negative Ea over RT?

  • @MrHiddenSol
    @MrHiddenSol 12 років тому

    Thanks so much , been working on this all day , this video made me get it!

  • @Lycheenini
    @Lycheenini 11 років тому

    Beautiful explanation! Thank you!!

  • @purecuIt
    @purecuIt 10 років тому

    Excellent, Thank you!

  • @ginganinja325
    @ginganinja325 9 років тому

    Perfectly explained...

  • @jaynaborja4621
    @jaynaborja4621 8 років тому

    better than my professor omg thank you

  • @jadeddragon13
    @jadeddragon13 13 років тому

    Thank you SO much! This helped immensely!

  • @cmbunton
    @cmbunton 13 років тому

    Thanks! This video was extremely helpful!

  • @whotookmyboot
    @whotookmyboot 10 років тому

    For some reason when I calculate the ln (2.52x10^-5/3.16x10^-3) I'm getting -18.646. What am I doing wrong?

  • @pcwildcat
    @pcwildcat 11 років тому

    This is wonderful.

  • @canadianhaitian
    @canadianhaitian 8 років тому +1

    How did you do the first part LN 2.52E-5/LN 3.16E-3 and get -4.83945 because i keep getting -18.64699387

    • @marisajimenez2972
      @marisajimenez2972 8 років тому

      Parentheses placement make a big difference. I got -18.647 as well, but when i put more parenthesis i got the same answer as her

  • @nothingoutoftheordinary5217

    Thank you!!!

  • @iraqforever4130
    @iraqforever4130 6 років тому

    Thank you 💖💖💖💖

  • @catherineescobar1862
    @catherineescobar1862 8 років тому

    Thank you so much!

  • @marceliniir
    @marceliniir 12 років тому

    Thank youuu!! You've saved me!

  • @Sam-tj7gj
    @Sam-tj7gj 8 років тому

    how did you find 8.31 for R?

    • @sim3067
      @sim3067 8 років тому +1

      Thats the gas constant, its always the same. When i take my exam the gas constant is given on a separate sheet, so you shouldn't have to remember it.

  • @talzumon101
    @talzumon101 11 років тому

    PS... what is Kalvin??? And how did u come up with a wierd unit like that?

    • @MrKellyclarksen
      @MrKellyclarksen 10 років тому

      Kalvin is a temperature to make it so there is never a negative degree. you just add 273 to Celsius and that's all it is

    • @claytonsims6540
      @claytonsims6540 10 років тому

      It's spelled Kelvin, it's just a unit of absolute temperature used in many calculations. The R constant is equal to 8.314 J/mol-K, so you convert the Celsius temperature to Kelvin in order to cancel the unit and find Ea in J/mol

  • @Wolfeywolf16
    @Wolfeywolf16 6 років тому +1

    Next time, write ALL the parenthesis we need to add in at a specific place, otherwise we're just going to get the wrong answer

  • @wadehamilton5084
    @wadehamilton5084 11 років тому

    This is great but you really explain how to solve ea if you're given 1 constant and 1 temperature instead of 2...

  • @arifiantosyahalief4996
    @arifiantosyahalief4996 2 роки тому

    Thankyou

  • @VedPrakash-zo7bu
    @VedPrakash-zo7bu 6 років тому

    Thank you🤗

  • @AEEZProductions
    @AEEZProductions 8 років тому

    Wow thanks so much!!

  • @x9h6r85
    @x9h6r85 2 роки тому

    We love you

  • @rubayetislam6799
    @rubayetislam6799 6 років тому

    sound facts...

  • @JoeBased08
    @JoeBased08 8 років тому +1

    I'm pretty sure it's ln(k2/k1)

    • @saadrehman362
      @saadrehman362 8 років тому

      It doesn't matter as long as you subtract the inverse temperatures in the opposite order.

    • @JoeBased08
      @JoeBased08 8 років тому +1

      S. R. Yeah, but most people won't know that unless she points it out, and it could mess others up.

  • @DanielBoakye
    @DanielBoakye 10 років тому

    thank you.

  • @scouture100
    @scouture100 8 років тому +5

    Ln (k2/k1)

    • @alinawroz4373
      @alinawroz4373 7 років тому +1

      Well if u say ln(k2/k1) it'd be equal to -Ea/R but if you write as ln(k1/k2) it'd be equal to Ea/R it's only to get rid of the negative Ea, both give the same answer.

    • @IdkaCoolusername
      @IdkaCoolusername 7 років тому

      Yep. Depends on how a person wants to derive the equation. Also if you wanted Ln(k2/k1) but R to positive, you could do T1 - T2 instead. Just posting this here so others will see this as well.

  •  12 років тому

    LOVE LOVE LOVE

  • @369thegoose1
    @369thegoose1 6 років тому

    should be -EA ... you forgot the minus.

  • @JorgeLopez-ow6qe
    @JorgeLopez-ow6qe 10 років тому

    why dont you use 8.314x10^-3? why are you using 8.31? and when should i use it and when not to use it?

    • @Studmonkey38
      @Studmonkey38 8 років тому

      +Jorge Lopez The units for activation energy is usually kJ/mol and the gas constant is J/mol*k. So for every problem you have to convert Ea to J or R to kJ so they match. She just left the constant in J and converted them to kJ at the end of the equation. You can convert before or after, it doesn't matter.

  • @tomboller9238
    @tomboller9238 9 років тому

    When using k2 over k1 and t1-t2 you get 410.57 kj/mol. I beilve you made a mistake

  • @talzumon101
    @talzumon101 11 років тому

    Yeah.... I don't get it... Nor do I want to.
    I'll stick with being a sophomore in highschool befor I move onto that confusing crap!

  • @MrJack5672
    @MrJack5672 9 років тому +1

    watch your sig figs people

  • @pepteamsergi09
    @pepteamsergi09 13 років тому

    nice nails....

  • @danielperrett3782
    @danielperrett3782 6 років тому

    Way too fast

  • @dylanwalker8748
    @dylanwalker8748 11 років тому

    nails are so dirty..