Redox, Electrode Potentials and Transition Elements - OCR A-level Chemistry Exam Questions

0:00 Which exam papers?
0:30 2017 Q22
08:00 2018 Q21
22:45 2019 Q18
edit at 12:29 their should only be 2H+ not 4H+
OCR A Complex Ions and Aqueous Ions summary table = ocr.org.uk/Images/598991-colo...

[@mrmurraygreen]

Check out the video description for timestamps for the 3 different years of papers! And leave a like/comment if you’d like more of this video style ahead of the summer exams 👍🏻😄

[@SarahMalaikah]

thanks a lot for this video!! this deserves so much more views!

[@mrmurraygreen]

Thank youuuuu

[@kishora6217]

loved this video!! chem forever

[@yusrahndumbogani8653]

A really good video helped me out a lot😄👍

[@hannahweller17]

Awesome video thank you!! :)

[@mrmurraygreen]

You’re very welcome

[@saadcheema2921]

Thank you so much for this video, it really helped me understand how to answer those tough questions.

[@mrmurraygreen]

You’re very welcome

[@batoolalmousawi]

Day before my exam omg

[@Mich-ud2bj]

Please someone explain the equillibrium shifts on redox reactions. I never know why it shifts or what you are supposed to mention

[@mrmurraygreen]

Does this help? th-cam.com/video/EFyJIcSs0Nc/w-d-xo.htmlsi=kltF4wXhTIVR8uue

[@yoh7605]

Hi does the size of electrodes matter sometimes I see PT electrode as a lot smaller e.g. in hydrogen one

[@mrmurraygreen]

For the Pt electrode it should be fine to show it smaller but I’ve never successfully found a mark scheme that seems bothered.

[@yoh7605]

@@mrmurraygreen oh thanks

[@jm._6187]

doesn’t matter, it’s all about how you use it mate

[@j.2k561]

12:29 why is there 4H+ ions, shouldn't it be 2H+ ions

[@mrmurraygreen]

Quite right! Well spotted 🫡
I’ve added an edit note to the video description.

[@scottianrussell]

First

[@mrmurraygreen]

Rapid!

[@scottianrussell]

@@mrmurraygreen 😜

[@Shereenshaikh]

What’s your goal in life?