OCR Chemistry 2019 Paper 3 Unified Chemistry - FULL WALKTHROUGH for A-level

Update = Q3a(i) there should be a 4 in front of the lead oxide not a 2 👍🏻

[chapters]

0:00 Unified Chemistry
0:20 Q1
7:18 Q2
16:11 Q3
22:47 Q4
34:20 Q5
47:58 Q6

[LINKS]

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[y]

thank you so much, you’ve helped me so much this exam season, wish I found this channel sooner!

[kashoot]

This is deffo a tough paper imo, probably one of the hardest new spec unified papers I’ve ever seen. Nevertheless cheers for this

[Account-qlmc]

Your vids are insanely useful, thank you!!!!

[sandrat]

thank you so much for this video - very helpful

[engineeringmadeasy]

Hi, I hope you put all of your videos in playlist. Thanks

[kklol]

sir this comment is not related to the video but im here to comment thanks for the locant video, as the comments there are blocked

[madelinelouish]

29:54 Why do you x10 to convert from cm3 to dm3, the conversion is divided by 1000 usually, why do you just multiply moles by 10 to get dm3

[andrewwhitehead]

Would you ever use the change in oxidation number of the Lead in Lead oxide (down 3) and the Carbon in methane (up 8) as a quick way of balancing the equation in Question 3?

[mackenziecameron]

was the reduction of Pb2O3 meant to have a 4 coefficient?

[billiejean]

Thank you.would you mind doing one for 2020 please

[sandrat]

why is the enthalpy of solution negative