Cis-Trans and Markovnikov (exam) — Major Product
Propene + HBr -> 2-bromopropane major.
Learning objectives
- Define major product using accurate chemistry terms.
- Explain why major product matters within cis-trans and markovnikov (exam).
- Apply the learning unit to an FBISE-style example, comparison, diagram, or calculation.
Definition
Propene + HBr -> 2-bromopropane major. 1-bromopropane minor. Draw both if the paper asks. Not a synthesis of a solvent stock. Anti-Markovnikov with peroxide for HBr only — school exception named. This page separates the idea from the wider topic “CIS-TRANS AND MARKOVNIKOV (EXAM)” so it can be revised and assessed on its own.
Important terms
- MAJOR PRODUCT
- Propene + HBr -> 2-bromopropane major.
- CIS-TRANS AND MARKOVNIKOV (EXAM)
- Cis-trans: two different groups on each C of C=C.
Overview
Study this learning unit in three steps:
Key Idea
Propene + HBr -> 2-bromopropane major. 1-bromopropane minor. Draw both if the paper asks. Not a synthesis of a solvent stock. Anti-Markovnikov with peroxide for HBr only — school exception named.
Examples H to CH2 · Br to middle · Carbocation reason if taught
Exam Application
Worked propene + HBr: H to the CH2 end (already two H) Br to the middle carbon major name: 2-bromopropane
Examples H to CH2 · Br to middle · Carbocation reason if taught
WHAT — CIS-TRANS AND MARKOVNIKOV (EXAM) — MAJOR PRODUCT
Propene + HBr -> 2-bromopropane major. 1-bromopropane minor. Draw both if the paper asks. Not a synthesis of a solvent stock. Anti-Markovnikov with peroxide for HBr only — school exception named. This page separates the idea from the wider topic “CIS-TRANS AND MARKOVNIKOV (EXAM)” so it can be revised and assessed on its own.
WHY — Why this topic matters
CIS-TRANS AND MARKOVNIKOV (EXAM) — MAJOR PRODUCT 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
Propene + HBr -> 2-bromopropane major. 1-bromopropane minor. Draw both if the paper asks. Not a synthesis of a solvent stock. Anti-Markovnikov with peroxide for HBr only — school exception named. Examples: H to CH2; Br to middle; Carbocation reason if taught. Exam use: Worked propene + HBr: H to the CH2 end (already two H) Br to the middle carbon major name: 2-bromopropane
Explanation
Propene + HBr -> 2-bromopropane major. 1-bromopropane minor. Draw both if the paper asks. Not a synthesis of a solvent stock. Anti-Markovnikov with peroxide for HBr only — school exception named. Examples: H to CH2; Br to middle; Carbocation reason if taught. Exam use: Worked propene + HBr: H to the CH2 end (already two H) Br to the middle carbon major name: 2-bromopropane
In simple words
Federal Board Class 11 Chemistry learning unit. Easy wording; no provincial-board material added.
Key points
- Markovnikov named
- 2-bromopropane
Exam preparation
Exam Focus
Quick revision
Revision Zone
Cis-Trans and Markovnikov (exam) — Major Product
Sticky Notes · Quick Revision
Core idea
- Propene + HBr -> 2-bromopropane major. 1-bromopropane minor. Draw both if the paper asks. Not a synthesis of a solvent stock. Anti-Markovnikov with peroxide for HBr only — school exception named. This page separates the idea from the wider topic “CIS-TRANS AND MARKOVNIKOV (EXAM)” so it can be revised and assessed on its own.
WHAT
- Propene + HBr -> 2-bromopropane major.
WHY
- CIS-TRANS AND MARKOVNIKOV (EXAM) — MAJOR PRODUCT is an independent FBISE learning unit because students must use its definitions, conditions, equations, or trends separately in explanations and calculations.
HOW
- Propene + HBr -> 2-bromopropane major. 1-bromopropane minor. Draw both if the paper asks. Not a synthesis of a solvent stock. Anti-Markovnikov with peroxide for HBr only — school exception named. Examples: H to CH2; Br to middle; Carbocation reason if taught. Exam use: Worked propene + HBr: H to the CH2 end (already two H) Br to the middle carbon major name: 2-bromopropane
Common misconception
- Do not treat major product as the same as every other part of cis-trans and markovnikov (exam); define this unit and use its own evidence, steps, or conditions.
FBISE exam check
- Define cis-trans and markovnikov (exam) — major product, explain how it works, and support the answer with one relevant example.
60-second revision
- Propene + HBr -> 2-bromopropane major.
- H to CH2
- Exam link: Markovnikov named.
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