Amount of Substance - Exam Question Walkthrough｜A Level Chemistry (AQA)

Ace your A Level Chemistry exams with this in-depth analysis of a past paper question. I break down the complexities and guide you through every step to ensure you understand and can replicate them in your revision and exams.
This question is from paper 1 2021 and focuses on a typical 6-mark amount of substance ideal gas equation question. However, it also involves the aspect of limiting and excess reagents. I explain how to calculate the limiting reagent and how to use it to calculate the maximum moles of product.
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📝 Access the resources:
Question paper: filestore.aqa....
Mark scheme: filestore.aqa....
📚 Although this tutorial focuses on AQA, the concepts covered here are also applicable to other exam boards, such as OCR and Edexcel.
#alevelchemistry #amountofsubstance #chemistryrevision

[@easymodeexams33]

If you want to absolutely COOK your Chem exams, apply for my tuition: forms.gle/7xMUS6pSaU5BkgfSA

[@marissa4154]

Could you do esters I find it so confusing thanks dad 😆 and polymers

[@easymodeexams33]

first time I've been called dad.. 😂 yeah nw, will add it to the list and make it when I get some time

[@Jean-bl1pm]

I'm really enjoying this channel for revision! thank you so much

[@easymodeexams33]

thanks! no worries, good luck :)

[@rachaelkenyon4712]

Doing a great job mate 👍

[@easymodeexams33]

Thanks 😄

[@user-fizz-r6y]

Thank you for the video , really helpful
I have a question : How do you know that the units for volume are right ; in m3
( how do you know when to convert the volume units )

[@easymodeexams33]

m3 if it's ideal gas equation, dm3 if anything else :) (unless question asks for different volume units specifically, which is rare)

[@Exotic6792]

YEAAAAAAAAAAAAAAS thanks

[@easymodeexams33]

happy to help :)

[@gOdhazZ]

6/6 bosh

[@easymodeexams33]

sick man! Keep it up 💪

[@aishahsharjil7310]

sir please do more questions on kp kc and buffer solutions i could really get ur help to pass my exams

[@easymodeexams33]

I've made a few past paper walkthroughs for Kp, Kc and buffers - have you checked them out? I will make some more when I get time, but the principles of how to answer them should carry over from my other videos :)

[@aishahsharjil7310]

@@easymodeexams33 yes i watched all and the more you do the better i understand

[@iknowimwrongbut4491]

another great vid🫡 I almost got caught out by the mol ratio lol

[@iknowimwrongbut4491]

Do you have any tips for writing half equations/overall for fuel cells for AQA? I keep seeing past questions they use with fuel cells that aren't on the spec, they give you the equations but I'm not to sure on it.

[@easymodeexams33]

@@iknowimwrongbut4491 if you know the past paper question and year I can take a look :)

[@iknowimwrongbut4491]

@@easymodeexams33 thank you so much, it’s AQA a level paper 1 2020 November, all of question 11.