Pointing out that although the two half reactions (Cu & Zn) are reversible but that each has a relative 'tendency" is a crucial, very helpful insight and one I've not seen made before. Ditto for the sign "lip" and restatement of the lowest electrode potential when dealing with that confusing table!! I normally try to avoid pedantry but with this topic the details really matter so you might want to overlay the correct Ag coefficient on the RHS of the ionic equation at 13':00"; it should be 2Ag, right? Speaking from the US, I have to say that the A Level questions are hard! There seems to be a layer of interpretation required that makes the problem much more than basic mechanics/rote.
Thank you for the feedback! I’ll try to work out how do to an overlay 👍
Pointing out that although the two half reactions (Cu & Zn) are reversible but that each has a relative 'tendency" is a crucial, very helpful insight and one I've not seen made before. Ditto for the sign "lip" and restatement of the lowest electrode potential when dealing with that confusing table!!
I normally try to avoid pedantry but with this topic the details really matter so you might want to overlay the correct Ag coefficient on the RHS of the ionic equation at 13':00"; it should be 2Ag, right?
Speaking from the US, I have to say that the A Level questions are hard! There seems to be a layer of interpretation required that makes the problem much more than basic mechanics/rote.