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A Map of School Conversions
Alkene --H2/Ni--> alkane. Alkene --HBr--> haloalkane. Alkene --steam/H+--> alcohol. Haloalkane --KOH aq--> alcohol. Haloalkane --KOH alc--> alkene. Alcohol --dichromate--> aldehyde/ketone/acid. Alcohol --conc H2SO4--> alkene. Acid + alcohol --H2SO4--> ester. Haloalkane --CN- --> nitrile --hydrolyse--> acid (extra carbon). Meaning: draw the map, then pick a path of two boxes. Alkene -> halogenoalka
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A Map of School Conversions
What is it?
Alkene --H2/Ni--> alkane. Alkene --HBr--> haloalkane. Alkene --steam/H+--> alcohol. Haloalkane --KOH aq--> alcohol. Haloalkane --KOH alc--> alkene. Alcohol --dichromate--> aldehyde/ketone/acid. Alcohol --conc H2SO4--> alkene. Acid + alcohol --H2SO4--> ester. Haloalkane --CN- --> nitrile --hydrolyse--> acid (extra carbon). Meaning: draw the map, then pick a path of two boxes. Alkene -> halogenoalkane -> alcohol -> aldehyde -> acid — backbone map for exams. Count carbons after each synthetic step; silent carbon loss is the most common multi-step mistake.
In simple words
- Alkene --H2/Ni--> alkane.
- 1. C=C BOX: In: dehydration or elimination.
- 2. OH / C=O / COOH: Ox up the hill.
- Exam reminder: Worked two-step: ethene to ethanoic acid.
Important terms
A MAP OF SCHOOL CONVERSIONS: Alkene --H2/Ni--> alkane.
1. C=C BOX: In: dehydration or elimination.
2. OH / C=O / COOH: Ox up the hill.
What you should learn
- Explain a map of school conversions in simple chemical language.
- Connect 1. c=c box with 2. oh / c=o / cooh using equations, observations, or trends where needed.
- Answer a short Federal Board question with the correct terms and a clear reason.
Examples
- Br2 test
- Hydration named
- H2/Ni
C=C BOX
In: dehydration or elimination. Out: addition (Br2, HBr, H2, H2O). Polymer is a dead-end for further small-molecule steps (school). Nitrile reduction to amine; ester hydrolysis to acid — arrows on revision diagram.
OH / C=O / COOH
Ox up the hill. Reduce down with named hydrides. Ester side path. Carbonate tests the acid. Only use conversions your syllabus allows — question states starting set.
Recommended for Class 11
Full school-level explanation
Alkene --H2/Ni--> alkane. Alkene --HBr--> haloalkane. Alkene --steam/H+--> alcohol. Haloalkane --KOH aq--> alcohol. Haloalkane --KOH alc--> alkene. Alcohol --dichromate--> aldehyde/ketone/acid. Alcohol --conc H2SO4--> alkene. Acid + alcohol --H2SO4--> ester. Haloalkane --CN- --> nitrile --hydrolyse--> acid (extra carbon). Meaning: draw the map, then pick a path of two boxes. Alkene -> halogenoalkane -> alcohol -> aldehyde -> acid — backbone map for exams. Count carbons after each synthetic step; silent carbon loss is the most common multi-step mistake.
Hydrocarbons, then oxygen groups:
WHAT — A MAP OF SCHOOL CONVERSIONS
Alkene --H2/Ni--> alkane. Alkene --HBr--> haloalkane. Alkene --steam/H+--> alcohol. Haloalkane --KOH aq--> alcohol. Haloalkane --KOH alc--> alkene. Alcohol --dichromate--> aldehyde/ketone/acid. Alcohol --conc H2SO4--> alkene. Acid + alcohol --H2SO4--> ester. Haloalkane --CN- --> nitrile --hydrolyse--> acid (extra carbon). Meaning: draw the map, then pick a path of two boxes. Alkene -> halogenoalkane -> alcohol -> aldehyde -> acid — backbone map for exams. Count carbons after each synthetic step; silent carbon loss is the most common multi-step mistake.
WHY — Why this topic matters
A MAP OF SCHOOL CONVERSIONS is an independent FBISE learning unit because students must use its definitions, conditions, equations, or trends separately in explanations and calculations.
HOW — How it works
C=C BOX: In: dehydration or elimination. Out: addition (Br2, HBr, H2, H2O). Polymer is a dead-end for further small-molecule steps (school). Nitrile reduction to amine; ester hydrolysis to acid — arrows on revision diagram. Examples: Br2 test; Hydration named; H2/Ni. OH / C=O / COOH: Ox up the hill. Reduce down with named hydrides. Ester side path. Carbonate tests the acid. Only use conversions your syllabus allows — question states starting set. Examples: Distil vs reflux; NaBH4 named; Esterify. Worked two-step: ethene to ethanoic acid. ethene + steam/H+ -> ethanol ethanol reflux dichromate -> ethanoic acid school names only
C=C BOX
In: dehydration or elimination. Out: addition (Br2, HBr, H2, H2O). Polymer is a dead-end for further small-molecule steps (school). Nitrile reduction to amine; ester hydrolysis to acid — arrows on revision diagram.
Remember
- unsaturation hub
Examples
- Br2 test
- Hydration named
- H2/Ni
OH / C=O / COOH
Ox up the hill. Reduce down with named hydrides. Ester side path. Carbonate tests the acid. Only use conversions your syllabus allows — question states starting set.
Remember
- ox state hill
Examples
- Distil vs reflux
- NaBH4 named
- Esterify
Remember
- each arrow is a named reagent
- CN- adds a carbon
- hydrate then oxidise
- map only
- unsaturation hub
- ox state hill
- each arrow is a named reagent
- CN- adds a carbon
How the ideas connect
Worked two-step: ethene to ethanoic acid. ethene + steam/H+ -> ethanol ethanol reflux dichromate -> ethanoic acid school names only
Deeper understanding
Go beyond memorising A Map of School Conversions. Connect the definition to reasons, relationships, exceptions, and exam wording.
How the ideas connect
Worked two-step: ethene to ethanoic acid. ethene + steam/H+ -> ethanol ethanol reflux dichromate -> ethanoic acid school names only
Common mistakes
Exam focus
Core Idea
1. C=C BOX
2. OH / C=O / COOH
Exam Example
Exam focus
Quick revision
- each arrow is a named reagent
- CN- adds a carbon
- hydrate then oxidise
- map only
- A MAP OF SCHOOL CONVERSIONS: Alkene --H2/Ni--> alkane.
- 1. C=C BOX: In: dehydration or elimination.
Map of syllabus arrows. No extra illicit steps.
For long answers on A Map of School Conversions: define clearly → explain the main parts → give one example → state one exam caution.
Exam Focus
Exam Focus
Important points
- each arrow is a named reagent
- CN- adds a carbon
- hydrate then oxidise
- map only
Important formulas
- each arrow is a named reagent
- CN- adds a carbon
- hydrate then oxidise
Common exam traps
- Do not confuse 1. C=C BOX with 2. OH / C=O / COOH; state the difference before giving an example.
- Writing only “each arrow is a named reagent” is not enough. Explain what it means in a complete sentence.
Long question structure
Definition → key parts → example → exam caution
Common Mistakes
Common Mistakes
- Mistake
Do not confuse 1. C=C BOX with 2. OH / C=O / COOH; state the difference before giving an example.
- Mistake
Writing only “each arrow is a named reagent” is not enough. Explain what it means in a complete sentence.
- Mistake
Map of syllabus arrows. No extra illicit steps.
- Mistake
Map of syllabus arrows. No extra illicit steps.
Revision Zone
60-Second Revision
Quick cues from this topic — use them for last-minute revision.
each arrow is a named reagent
CN- adds a carbon
hydrate then oxidise
map only
Alkene --H2/Ni--> alkane. Alkene --HBr--> haloalkane. Alkene --steam/H+--> alcohol. Haloalkane --KOH aq--> alcohol. Haloalkane --KOH alc--> alkene. Alcohol --di
- Definition
- Alkene --H2/Ni--> alkane. Alkene --HBr--> haloalkane. Alkene --steam/H+--> alcohol. Haloalkane --KOH aq--> alcohol. Haloalkane --KOH alc--> alkene. Alcohol --di
- Example
- Br2 test
- Critical warning
- Do not confuse 1. C=C BOX with 2. OH / C=O / COOH; state the difference before giving an example.
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Exam Practice
Define
Q1. Define A Map of School Conversions.
Explain
Q2. Explain: C=C BOX.
Example
Q3. Give one clear example of A Map of School Conversions and say why it fits.
Mistake
Q4. State one common mistake students make about A Map of School Conversions.
Exam note
Q5. Write a short exam note on A Map of School Conversions: definition, two points, one example.
Sources & References
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.