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Ch13, Li (K, Lose e-,+ve ion form, anode) - Coggle Diagram
Ch13
Chemical cells
Chemical energy
Electricity energy
Magnitude depend on chemical
Reactivity series
K
Na
Ca
Mg
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Based on vigor of chem reaction
ElectroChemical Series of metals
K
Ca
Na
Mg
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Maximum V of a chem cell
H electrode as reference
Detailed ver
Li+
K+
Ca2+
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e-
Electrode
+ve, cathode
Accept e-
Positive end of voltmeter or multimeter
-ve, anode
Releases e-
Ionic half equation
Reduction
Oxidation
Oxidised +n e-
Reduced form
2 different metal electrode+electrolyte
Common set up:
Anode-
e-
+ve ion accumulate
Cathode+
-ve ion accumulate
Slowly halt
1st alt
Cu electrode
Filter paper soaked Saturated NaCl
2nd alt
When life gives you lemons
2 metal with salt bridge / porous device
Each half cell contain its own ion
Connected by stable chemical salt bridge
K+ , Na+ , NH4+ And NO3 -
Cathode decrease conc.
Anode increase conc.
Cathode cannot directly accept e- from anion, forcing e- to pass through external circuit
Daniel cell
Anode
Porous pot/ salt bridge
Cathode
-ve ions(SO4 2-)
Neutralise +ve ions, opp. Same
Prevents
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Complete circuit
e- (external)
Inert electrode
By electrolyte
To ch14
Li
K
Ca
Na
Mg
Al
Zn
Fe
Pb
H2(g)
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Lose e-,+ve ion form, anode