Chemistry | Chemical Equilibrium | Kc Calculation | Revision

A Very interesting question on Equilibrium constant and the theoretical understanding of graphs.
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[@bonolosetlhako2428]

Thank you so much Abuti Mlungisi. Your efforts are highly appreciated and valued. You make physical sciences much easier to comprehend and answer questions. You truly are a god send 🙏🏻 may God bless you and the wonderful work that you do

[@oneyy6165]

Thank you sir, I really hated graphs but watching your videos made me realize that they make the topic easier to understand

[@MlungisiNkosi]

I’m glad I could help

[@intikhabalam7746]

At time=4 the rate of forward reaction is equal to reverse reaction.

[@zizilemagaqa3136]

Yhooo thank you soo much 🥹💖 Chemistry has never gotten this easy😭😭I'm confident in Chemical Equilibrium now🎉🙈😇 God Bless you🥹🤞🏻🙏

[@carolinenomahlubi5885]

road to 15k❤🎉🎊 you deserve it sir

[@MlungisiNkosi]

Thank you so much 😀. It is amazing hey... It's great that I can play just a small part in the journey to the success of others

[@maokotokulogo866]

Understandable and helpful

[@ayandamvuyo1530]

Wowwwwww Mr Nkosi, you make it so easy thanks a lot Sir

[@MlungisiNkosi]

Thank you 🤗

[@albykimscakesnall7207]

You are a blessing continue with the same spirit

[@MlungisiNkosi]

Thanks 🙏🏾

[@Kabelo_Ntjatsane]

Sir, uhm how do we get the change part because I understand that I have to use ratios but every time I am practicing I fail to understand where the values come from . For instance you wrote "x" for the change value right and I don't understand how you came to use x. However, I do know the way ratios work the only problem is how do I get to decide that I am using x

[@MlungisiNkosi]

Great question... The assumption here was that 'x' must be the moles of iodine because it is what we wanted to calculate. I should've brought that point across with more clarity. I'll do better in future

[@neoKing01]

You're consistency keeps me going 🙏🙏

[@MlungisiNkosi]

I'm thankful... Please Keep going!

[@user-wx8kz2kf6q]

Mr Nkosi is this the June examination paper?

[@jerrybones4500]

great video sir !! Thanks alot ! but just to help future students how did sir get 8.57 in sir's first example ? as HI has a 2 in its mole ratio so isn't it suppose to be squared when calculator the KC value ?

[@MlungisiNkosi]

Yes it is... It is possible I might have made a mistake

[@playsonkay]

Hello sir. Thank you for the video 🔥🔥it really helped me understand this better, however I have one question. My question is based on the first statement of the scenario given, whether we use the concentration given for the Hydrogen iodide (1 mol•dm³) in the table or does the mention of hydrogen iodide being pure mean it was before the reaction so we don't use that concentration which will lead us to calculate for it as we did in the video?

[@MlungisiNkosi]

Was that not in excess? Because if it is, it won’t be possible to use the excess amount

[@user-ji8lq9jo8n]

Well well❤

[@Hiddengems927]

Hi sir .i was wondering if you could do past papers on the math the same way you do for physics

[@MlungisiNkosi]

I’m still trying to finish the syllabus. I will do so as soon as I’m done

[@mishaeljones2025]

Thank you sir i have been struggling with this😁😁

[@MlungisiNkosi]

My pleasure

[@tandzilematsenjwa9811]

Thank you so much I know understand chemical equilibrium

[@MlungisiNkosi]

You’re welcome

[@nhlanhlandebele8829]

Can we have a lesson on that table. I have no idea where to start with it.

[@MlungisiNkosi]

Go to the playlist… It’s already there. Alternatively book a session with us on email: [e-mail]

[@Asra_Fareed]

Hi Mlungisi 😊. Beautiful video😍. I just have one question, for Question 6.2.2.) You said that the forward reaction will be higher than the reverse reaction at t=4 mins. Can you please explain the theory behind this answer. I dont understand how you got that answer. Hope to hear soon😊👍

[@MlungisiNkosi]

The rate of the forward reaction is greater that the rate of the reverse reaction before equilibrium is reached as there are still theoretically more collisions per second because there aren’t as many products yet

[@Asra_Fareed]

@@MlungisiNkosi Perfect response. I understood now 🌸Thank you🌸

[@mel_indaa.a]

Why do some memos substitute negative values in the table

[@MlungisiNkosi]

To remind you that you must subtract on the reactants side.

[@sandisosamkela8830]

Sir how to change percentage to number of moles

[@MlungisiNkosi]

You take the percentage at moles. I’m assuming you’re talking about calculating imperical formula

[@calvinbafshoe2626]

Sir did I hear you correctly, did you just say the rate of the forward reaction is higher than? I think you are mistaken sir because forward reaction is the reactants forming products. Isn't the answer Equal to at time = 4 minutes?

[@MlungisiNkosi]

It's only at 6 minutes when we reach equilibrium when rates are equal. Prior to that, the rate of the forward reaction is higher. The reverse reaction is playing catch up.

[@calvinbafshoe2626]

@@MlungisiNkosi Thanks

[@angelamhlanga8773]

Sir please kindly do question on intermolecular forces. Thank you 🙏

[@MlungisiNkosi]

Please watch the full video on it

[@MlungisiNkosi]

Actually I think I didi it

[@ChefHot]

Please take a break after today sir. You really need to rest.

[@MlungisiNkosi]

😭😭😭😭😭😭😭😭😭 Sadly, I can't...

[@mahlatseagnes1534]

Sir r u not suppose to put 1mol.dm on HI?

[@MlungisiNkosi]

Where? Please put time stamp

[@mahlatseagnes1534]

Dat question with 500cm^3

[@nonhlahlahappiness515]

Why isn't x negative at 13:22

[@MlungisiNkosi]

Why though 🧐

[@allinfootball3259]

Do past papers on Acid and base too please Sir

[@MlungisiNkosi]

Most definitely... Look out tomorrow

[@kundaimaiwasha7391]

❤️

[@MlungisiNkosi]

Thank you

[@bongiwedlamini]

It's better to calculate, than a Wola7 thing, I don't understand it at all😭😭. Thank you Sir for all these easiest methods 🙏😍.

[@datboyezzy]

not me watching this vid cause I'm writing tomorrow😢

[@vuyoivosory2463]

Same😂

[@MlungisiNkosi]

Good luck

[@neoKing01]

Are you going to do MATHS videos anytime soon??

[@MlungisiNkosi]

Maths videos require a time investment that one cannot afford to make at the moment.

[@makgobelagertrude7443]

I still don't understand sir um truely lost😔

[@mahlatseagnes1534]

Haaaai sir ur mistakes makes me to loss hope 😭🤞

[@Lionly-Fitness]

There's Hope🤞