Page 3 - 1202 Question Bank Chemistry Form 5 KSSM

KNOW Mnemonics

Redox Equilibrium To Determine Oxidising Agents and
Reducing Agents Based on the Value of E 0

0
Molecules or ions with a more positive (less negative) E value:
O Oxidation
AcRO
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I Is
Ac Accept electron
L Loss R Reduction reaction
O Oxidising agent
0
Atoms or ions with a more negative (less positive) E value:
R Reduction
DoOR

I Is Do Donate electron
O Oxidation reaction
G Gain
R Reducing agent
Mnemonics (Chapter 1) 1 @ Pan Asia Publications Sdn. Bhd. Mnemonics (Chapter 1) 7 @ Pan Asia Publications Sdn. Bhd.

Voltaic Cell and Electrolytic Cell Prefix for Naming Carbon Compounds

FAT CAT
Meth Monkey
Electrons flow From Anode To CAThode.
Eth Eats
Battery
+ –
V
e – e – e – e –
Prop Pile
+ –
Anode Electrolyte Cathode
But Bananas
–
Electrolyte
Electrolyte
Anion
+
Cation
Monkey Eats a Pile of Bananas
Voltaic cell Electrolytic cell
Mnemonics (Chapter 1) 3 @ Pan Asia Publications Sdn. Bhd. Mnemonics (Chapter 2) 9 @ Pan Asia Publications Sdn. Bhd.

Electrolytic Cell Thermochemistry

• Cation = Ca+ion Heat Heat
Cation is a positive ion

• ANIon = A Negative Ion

• Anion (negative ion) moves to Anode (positive electrode)

• Cation (positive ion) moves to Cathode (negative electrode)

EXothermic reaction ENdothermic reaction
• OxidAtion occurs at Anode
Heat EXit from system Heat ENter the system
• ReduCtion occurs at Cathode

Mnemonics (Chapter 1) 5 @ Pan Asia Publications Sdn. Bhd. Mnemonics (Chapter 3) 11 @ Pan Asia Publications Sdn. Bhd.