2024 WAEC Chemistry Titration End point and measurements |REDOX titration

[@JoshuaBiaka]

I really appreciate your guidance 👍👍👍👍👍

[@radicalscience3769]

You are welcome

[@EmmanuelOnyenze-st2qt]

God bless you sir

[@AgboolaAminat-ze2vr]

Thanks so much

[@chiidam8919]

Thanks🎉
That was of great help

[@funnyp-q5h]

Please help us to be writing the names of acids and salt.(In full and in chemistry symbol or abbreviation ) H2O

[@ChisomNnadi-lk1es]

Thanks
Very much

[@UdokaEkpei]

Sir, please why did you acidify FeSO4 instead of KMnO4?

[@anekartrelaxationfilms6813]

What if they ask you to acidify the Fe2+ with 10mls of 1M H2SO4 rather than acidifying the KmnO4 solution???

[@radicalscience3769]

Same end point

[@comfortmicheals7461]

Hello sir pls why did you measure 5.5cm3 of H2SO4.... Can we use other measurement instead of that 5.5 to make the 2 molar concentration of H2SO4....Thanks

[@Rroz146]

Sir there is not suppose to be any indicator

[@IzuchukwuOkafor-qc5nj]

Pls when is the physics practical . Am interested

[@Makindies24]

Thanks sir but why did you not use HCl for the FeSO4

[@radicalscience3769]

Not part of the specimen provided

[@Makindies24]

@@radicalscience3769 okay sir thanks

[@luchyswt]

HCl will react with KMnO4 and hence will affect the titration.

[@captainmarvel1343]

Sir, so when writing a balanced equation for FeSO4 and KMnO4 should H2SO4 be invluded since it acidifies FeSO4?

[@radicalscience3769]

Yes

[@yusuftelimu219]

😢The balanced equation for the reaction is:
2KMnO4 + 10FeSO4 + 8H2SO4 -----> 2MnSO4 + 5Fe2(SO4)3 + K2SO4 + 8H2O
Ionic reaction:
MnO3- + 5Fe2+ + 8H+ ------>
Mn2+ + 5Fe3+ + 4H2O3

[@EzeObinna-sc3rz]

Please make me understand

[@aminatfatoki625]

Please sir what is our average titre value

[@radicalscience3769]

11-14 depending on the kind of FeSO4

[@OnokirijahOmovie-uq8jh]

Thanks sir remaining physics and biology

[@radicalscience3769]

Ok

[@glxssy.omo07]

KMno4 is dissolved in what solution

[@radicalscience3769]

Water

[@OnuohaRejoice-ns3uk]

So what is the topic of the practical

[@Rroz146]

Redox titration

[@spiritandlifechannel3039]

Are we asked to use feso47h20 or just feso4

[@radicalscience3769]

FeSO4

[@Makindies24]

Sir thanks for this, please what about physics and biology?.

[@radicalscience3769]

On the way

[@legitschoolnews7550]

I did mine and i got 12.00 cm³ as the end point

[@radicalscience3769]

You are on the right track

[@JeolPurity]

Thank you sir

[@radicalscience3769]

You are welcome

[@royalpriesthood9185]

So sir which one is the best ....
Should we use indicator or without indicator

[@radicalscience3769]

Wait till the day of the exam since it is all same value

[@valerimack3884]

Why using methyl orange...no indicator is required

[@radicalscience3769]

@@valerimack3884 it is part of the requirements

[@danielkaro4739]

As instructed by waec we should know if we are to use indicator or not Tnks so much sir

[@radicalscience3769]

@@danielkaro4739 that is why I used two method the difference is just the colors but the values are the same .so during the exam what ever they instruct ,No issue