Acid Derivatives (names) — Chloride and Ester
RCOOH + PCl5 -> RCOCl named.
Learning objectives
- Define chloride and ester using accurate chemistry terms.
- Explain why chloride and ester matters within acid derivatives (names).
- Apply the learning unit to an FBISE-style example, comparison, diagram, or calculation.
Definition
RCOOH + PCl5 -> RCOCl named. Ester as before. Acid chlorides + water: vigorous back to acid (named). Amide least reactive; ester for flavours and polymers link. This page separates the idea from the wider topic “ACID DERIVATIVES (NAMES)” so it can be revised and assessed on its own.
Important terms
- CHLORIDE AND ESTER
- RCOOH + PCl5 -> RCOCl named.
- ACID DERIVATIVES (NAMES)
- Ester: from acid + alcohol (last chapter).
Relationship
- reactive C=O
Overview
Study this learning unit in three steps:
Key Idea
RCOOH + PCl5 -> RCOCl named. Ester as before. Acid chlorides + water: vigorous back to acid (named). Amide least reactive; ester for flavours and polymers link.
Examples PCl5 named · Ethyl ethanoate · Not a plant
Exam Application
Exam reactivity order (school): acid chloride > anhydride > ester > amide towards nucleophiles / hydrolysis names, not a synthesis lab for drugs
Examples PCl5 named · Ethyl ethanoate · Not a plant
WHAT — ACID DERIVATIVES (NAMES) — CHLORIDE AND ESTER
RCOOH + PCl5 -> RCOCl named. Ester as before. Acid chlorides + water: vigorous back to acid (named). Amide least reactive; ester for flavours and polymers link. This page separates the idea from the wider topic “ACID DERIVATIVES (NAMES)” so it can be revised and assessed on its own.
WHY — Why this topic matters
ACID DERIVATIVES (NAMES) — CHLORIDE AND ESTER 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
RCOOH + PCl5 -> RCOCl named. Ester as before. Acid chlorides + water: vigorous back to acid (named). Amide least reactive; ester for flavours and polymers link. Examples: PCl5 named; Ethyl ethanoate; Not a plant. Exam use: Exam reactivity order (school): acid chloride > anhydride > ester > amide towards nucleophiles / hydrolysis names, not a synthesis lab for drugs
Explanation
RCOOH + PCl5 -> RCOCl named. Ester as before. Acid chlorides + water: vigorous back to acid (named). Amide least reactive; ester for flavours and polymers link. Examples: PCl5 named; Ethyl ethanoate; Not a plant. Exam use: Exam reactivity order (school): acid chloride > anhydride > ester > amide towards nucleophiles / hydrolysis names, not a synthesis lab for drugs
In simple words
Federal Board Class 11 Chemistry learning unit. Easy wording; no provincial-board material added.
Key points
- reactive C=O
- chloride fastest
Exam preparation
Exam Focus
Quick revision
Revision Zone
Acid Derivatives (names) — Chloride and Ester
Sticky Notes · Quick Revision
Core idea
- RCOOH + PCl5 -> RCOCl named. Ester as before. Acid chlorides + water: vigorous back to acid (named). Amide least reactive; ester for flavours and polymers link. This page separates the idea from the wider topic “ACID DERIVATIVES (NAMES)” so it can be revised and assessed on its own.
WHAT
- RCOOH + PCl5 -> RCOCl named.
WHY
- ACID DERIVATIVES (NAMES) — CHLORIDE AND ESTER is an independent FBISE learning unit because students must use its definitions, conditions, equations, or trends separately in explanations and calculations.
HOW
- RCOOH + PCl5 -> RCOCl named. Ester as before. Acid chlorides + water: vigorous back to acid (named). Amide least reactive; ester for flavours and polymers link. Examples: PCl5 named; Ethyl ethanoate; Not a plant. Exam use: Exam reactivity order (school): acid chloride > anhydride > ester > amide towards nucleophiles / hydrolysis names, not a synthesis lab for drugs
Common misconception
- Do not treat chloride and ester as the same as every other part of acid derivatives (names); define this unit and use its own evidence, steps, or conditions.
FBISE exam check
- Define acid derivatives (names) — chloride and ester, explain how it works, and support the answer with one relevant example.
60-second revision
- RCOOH + PCl5 -> RCOCl named.
- PCl5 named
- Exam link: reactive C=O.
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