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A* FULL Summary A-level Chemistry: Electrochemistry £5.99   Add to cart
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  7. Unit 3.1.11 - Electrode potentials and electrochemical cells

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A* FULL Summary A-level Chemistry: Electrochemistry
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Full summary notes on the ‘electrochemistry’ topic in A-level Chemistry. Written by an A* student. Simple, short, neat and easy to understand. Very concise and contains everything you need to know for this topic. Suitable for AQA and OCR exam boards. Affordable price too!

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  • August 31, 2023
  • 4
  • 2023/2024
  • Summary

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Electrochemistry
How are electrochemical cells made?


to
↳
also single half all
2 differentm etals dipped in salts olutions of their own ions. you can make one
involving a solut a
aqueous
ions


of the same element.




-- ↳cel
cell




Sawdenwae
half cell half


· zinc

This
loses
is
electrons

determined by
more

its
easily than copper
electrode potential (see below)
(more easily oxidised)
e
arabinet en


3
oxidised to
·
therefore, in the first half-cell, 2n(s) is
Int,ag)
and in the second half-cell, cnt(ag) is reduced to (u(s).



I and attende
↓ B Fest, or vice versa, happenon
Sin E m



trage Each
oneanternatureaerateene
ispokaneecanary,by
panor
the saw

on
·




Drawing electrochemical cells
·
always putthe half cell with the more
negative electrode

is it potential on the left in this case, the zine half cell.
-




Esplic manxidation


awasare
or
or




Traway
in
Electrode Potential vs Cell Potential

an
ele bagunderpositorcamerated
must
a
↓
eten Beta,aredefame whereatanother
Stone" made
r
grantareotation see below).
e


between2electrodeene
electrochemical



standard conditions used to potentials?
⑦
Why are measure electrode

shifted by changes in temp, pressure a cone. This means thatt h e cell potential would also change. Therefore, using standard
-> since half-cell reactions are reversible, the
equilibrium position is


conditions ensures
you gett h e same value each time and can: compare differentc ells.

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