i got the same answer but i didn’t even think about the contact process, i just set up the equation and worked out the molar ratio from the moles we found (2:1), they react to give 2VO2 where vanadium has +4 oxidation state. would i lose most marks from this method?
It's not easy! dividing the moles in this question was to get the ratio between moles of vanadium and moles of electrons, to work out how many moles of electrons was gained by vanadium. Don't be discouraged or concerned! It's a very difficult question, and very unique. I do not expect it to come up again. Do make sure you understand that standard concept of mole ratios though, and be comfortable using that in other more standard calculation questions. Good luck! :)
@@zxcbnm7829 yo so I've been looking through lots of questions and they're all pretty much carboxylic acid derivative questions e.g., esters, acyl chlorides, ethanoic anhydrides, organic analysis and nucleophilic add-elim mechanisms. Not really any carboxylic acid specific ones
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i got the same answer but i didn’t even think about the contact process, i just set up the equation and worked out the molar ratio from the moles we found (2:1), they react to give 2VO2 where vanadium has +4 oxidation state. would i lose most marks from this method?
Nice! I don't think you'd lose a mark, I was just using the contact process to explain the oxidation
I hope to god we don’t get something like this tmrw…
Word
Damn I still don’t get the doing the molar ratio to calculate the moles of electrons and dividing the moles of vanadium by the moles of electrons…
It's not easy! dividing the moles in this question was to get the ratio between moles of vanadium and moles of electrons, to work out how many moles of electrons was gained by vanadium. Don't be discouraged or concerned! It's a very difficult question, and very unique. I do not expect it to come up again. Do make sure you understand that standard concept of mole ratios though, and be comfortable using that in other more standard calculation questions. Good luck! :)
Please look at the last question on 2017 AQA paper 1
Sure, will add it to the list 👍
Can you please go over 6 mark practical question on paper 3 in the future
fosho, I have a couple on my channel already, have u got a particular required practical in mind?
can u do carboxylic acid plz :)
Sure thing, will add it to list of requested videos. Anything particular about carboxylic Acids, or just any AQA question?
@@easymodeexams33 any hard question
@@zxcbnm7829 yo so I've been looking through lots of questions and they're all pretty much carboxylic acid derivative questions e.g., esters, acyl chlorides, ethanoic anhydrides, organic analysis and nucleophilic add-elim mechanisms. Not really any carboxylic acid specific ones
@@easymodeexams33 thts fine as long as it is from tht topic ( Ok Thank you carboxylic acid derivative questions)
@@easymodeexams33 oooh if you can throw in some benzene questions that'd be great
why so much working out for a simple question
Mainly for teaching purposes, so people can see my thinking step-by-step