Electrochemistry
- Alkenes (notes)
← Back to Alkenes Hydrogenation Type of Reaction: Reduction/ Addition Hydrogenation is NOT an electrophilic addition reaction; the mechanism is solid state catalysed (adsorption) and does not involve an electrophile. Alkenes do not react...
- Elucidation
← Back to Organic Chemistry Problem-Solving Approach Approach: Make as many deductions as possible from the information given in the question. Start identifying from the unknown with the most information/ deductions. Make sure all reactions/...
- Distinguishing
← Back to Organic Chemistry Problem-Solving Approach Approach: Spot the difference: FG or structure? FG: Use a test specific to the FG present in only one of the two compounds. Structure: Most of the time → Iodoform or selective oxidation...
- 6 Tips To Ace Your 'a' Level Chemistry
Tip #01 - Understand AND memorise key definitions, equations and concepts. Tip #01 is of fundamental importance. Working on the other tips without fulfilling Tip #01 will gain you limited results. But I got an A for my 'O' levels...
- Thermochemistry : 9.2 Hess Law
Hess's Law of Heat Summation When reactants are converted to products, the change in enthalpy is the same whether the reaction take step in one step or in a series of step. ΔH1 =ΔH2 + ΔH3 Application Using Hess's...
Electrochemistry
Reactions
← Back to Organic Chemistry Problem-Solving Approach
There are 4 types of questions:
- Given reactants + products → suggest reagents and conditions
- Given reactants + reagents → suggest products
- Given new reaction (Grignard, Killiani-Fishcer, Azo, Wittig) → suggest products
- Given reactants/ products/ reagents → state type of reaction
1. Given reactants + products → suggest reagents and conditions
Approach:
- Memorise, memorise, memorise!
2. Given reactants + reagents → suggest products
Approach:
- Identify ALL functional groups (FG) in reactants
- React ALL FG with reagents
- Watch out for regio/stereo-selective rules: Markonikov, Saytseff etc.
- Clarify minor differences e.g.
Can NaBH4 reduce carboxylic acids?
Can K2Cr2O7 cleave C=C?
Can H2/ Pt reduce nitrobenzene?
| Example: Work in Progress |
3. Given new reaction (Grignard, Killiani-Fishcer, Azo, Wittig) → suggest products
Approach:
- Identify pattern from example
- Apply pattern/ rule to new reactant
| Example: Work in Progress |
4. Given reactants/ products/ reagents → state type of reaction
Approach:
- Identify FG that undergoes reaction
- Recall what types of reaction that FG can undergo.
Note:
Halogenation, hydrogenation, hydration etc are not types of reactions
| Example: Work in Progress |
- Alkenes (notes)
← Back to Alkenes Hydrogenation Type of Reaction: Reduction/ Addition Hydrogenation is NOT an electrophilic addition reaction; the mechanism is solid state catalysed (adsorption) and does not involve an electrophile. Alkenes do not react...
- Elucidation
← Back to Organic Chemistry Problem-Solving Approach Approach: Make as many deductions as possible from the information given in the question. Start identifying from the unknown with the most information/ deductions. Make sure all reactions/...
- Distinguishing
← Back to Organic Chemistry Problem-Solving Approach Approach: Spot the difference: FG or structure? FG: Use a test specific to the FG present in only one of the two compounds. Structure: Most of the time → Iodoform or selective oxidation...
- 6 Tips To Ace Your 'a' Level Chemistry
Tip #01 - Understand AND memorise key definitions, equations and concepts. Tip #01 is of fundamental importance. Working on the other tips without fulfilling Tip #01 will gain you limited results. But I got an A for my 'O' levels...
- Thermochemistry : 9.2 Hess Law
Hess's Law of Heat Summation When reactants are converted to products, the change in enthalpy is the same whether the reaction take step in one step or in a series of step. ΔH1 =ΔH2 + ΔH3 Application Using Hess's...