Lab: Back titration to determine the % CaCO3 in eggshell DATA COLLECTION [IB CHEMISTRY]

I got 85% but 95% expected. What could have gone (a little) wrong? Note the calculations are not in this video - check out "Mr M 4 Chem" video for that.

[@lwee9648]

your videos are amazing and is helping a lot of IB Chemistry students. Thank you

[@ibchemvids]

Ta!

[@flowting5163]

i like how the words on the whiteboard in the background changed for a few times

[@ibchemvids]

hehe - easter egg

[@ducatimartin]

Great video!! Thanks! Can you share the link with the one with how you got the 85% please?? Regards.

[@joeyneglia5561]

Hello I have to create my own experiment for my chemistry class and I am wondering how u got the 85%

[@michelleenkhsaikhan]

Cool, I am doing this experiment at school tomorrow.

[@gurikjanjua604]

Do we have to take aliquots of the Hcl+ eggshell solution before titration with NaOH . You didn’t do it but all other examples online did. Is there a proglem if I don’t do it for my IA?

[@ibchemvids]

I didn't not sure what the advantage is. What is the Independent variable for your IA? It should not be type of egg.

[@gurikjanjua604]

@@ibchemvids I am calculating the cac03 in different types of eggshells. Organic brown, white etc.

[@carpediem2789]

Maybe because he knew the volume of HCl used before he started the titration. So i think he could just use that volume.

[@f1opi497]

can you provide me with a link to Mr M 4 Chem video for the calculations? I cant seem to find it, would appreciate it a lot!

[@JamesMidgleyChem]

Here you go :) kzbin.info/www/bejne/ppakopeajcujaqs

[@ciacia1286]

The erlenmeyer flask with the eggshell and HCL then you cover with the black rubber, is it an open system or a closed system?

[@littlesam8558]

The answer should be 0.845 (84.5%), right?

[@Cassandra_mudau]

How did you get that answer?

[@vergikacakcs7139]

Walter didnt die

[@mohsanshaikh7863]

How to know the amount of calcium carbonate in egg shell

[@user-nm1ek1of8g]

How many days does it take for caco3 to react with hcl?

[@ibchemvids]

Leave it overnight

[@karthikpolisetty8204]

IS THIS COMPLEXOMETRIC METHOD? PLS REPLY

[@ibchemvids]

It is not