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GyanMul Prep · NEB +2 · Science · Grade 12

Chemistry (Science, Grade 12)

Everything on these tabs is Chemistry (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

GyanMul Prep · NEB +2 · Science · Grade 12

Chemistry (Science, Grade 12)

Everything on these tabs is Chemistry (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

Chapter 12 of 21 · Chemistry (Science, Grade 12)

Ethers

8 topics
Board exam — Organic chemistry, 33 marks across 10 chapters

Two alkyl groups joined by an oxygen: Williamson's synthesis, the inertness that makes an ether a solvent, and the cleavage by hydrogen iodide that is almost its only reaction.

Topics

What the syllabus defines for this chapter

1Nomenclature and classification; symmetrical and unsymmetrical ethers
2Preparation by Williamson's synthesis
3Preparation by the dehydration of alcohols
4Physical properties and the reason for their low boiling points
5Cleavage by hydrogen iodide and the products at each end
6Reaction with air: peroxide formation
7Diethyl ether: preparation, properties and uses
8Distinguishing an ether from an alcohol