GCSE Chemistry Revision "Introducing Electrolysis"
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- เผยแพร่เมื่อ 3 พ.ค. 2017
- GCSE workbooks www.amazon.co.uk/Dr-Shaun-Don...
School licenses from 40p per copy www.freesciencelessons.co.uk/...
In this video, we start looking at electrolysis. We explore why molten or aqueous ionic compounds can conduct electricity and then look at the reactions that take place at the cathode and at the anode.
This video is based on the AQA spec. If you are following a different exam board then you should check your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
What to remember:
PANIC- Positive anode negative is cathode
REDCAT- REDuction CAThode
ANOX-Anode OXidisation
OILRIG:- Oxidation Is Loss Reduction Is Gain
LIPGIN- Loss Is Positive Gain is Negative
your welcome
legend
I use
An oil rig cat:
Anode Oxiditation is loss reduction is gain cathode
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Thanks
@@sulaimanhamid8358 nah
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all those with doubts bout oxidation and reduction.... remeber OIL-RIG. oxidation is loss (of electrons) reduction is gain (of electrons). Hope I helped :)
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Me
Me
I'm watching this on 1.5x speed to see if it's suitable (it is) to show to a student who I'm tutoring tomorrow
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Thanks for the comment. I'm glad that the videos are helping you.
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Update?
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Hey! I wanted to ask if we could actually subtract electrons, as my teacher had told me that we can only add them
yh thats oxidation
Do we need to learn all the metal compounds charges, or will they give it to us, i.e., pb2+ or 2Br-?
Everything you need will be given or can be worked out from the question.
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I can't seem to find the workbook
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Why do the bromide ions lose an electron at the anode?
hi, sir, I have got a question: 1:08 that equation at the bottom do I have to memorize it, or is there any logical way to work it out?
also if I wrote Pb2+ + 2e- = Pb will it still be correct? thx :)
I would memorise it. The equation that you have written is correct for reduction.
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Whats the half equation for the anode for the substance silver nitrate
Great video but I don't understand how you got Pb2+ from Pb and how you got Br- from Br2?