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A-level Chemistry > 16 - Organic Analysis > Flashcards

16 - Organic Analysis Flashcards

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1
Q

What is the test for a halogenoalkane?

A

Add warm aqueous NaOH
Acidify with HNO3
Add AgNO3

Precipitate of AgX

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2
Q

What is the test for an alcohol?

A

Add acidified Kr2Cr2O7

Orange turns green with primary or secondary (or aldehydes)

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3
Q

Give two tests for aldehydes.

A

Warm with Tollen’s
Silver mirror forms

Warm with Fehling’s
Blue goes red precipitate

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4
Q

What is the test for a carboxylic acid?

A

Add aqueous NaHCO3
CO2 given off

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5
Q

What is on the x axis of a mass spectrum?

A

mass/charge ratio

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6
Q

What is the range of a fingerprint region?

A

Wavenumber < 1500cm-1

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7
Q

What region is unique to an organic molecule? (infrared)

A

Fingerprint region

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8
Q

How does infrared spectrometry work?

A

Identifies compounds based on changes in vibrations when they absorb IR of certain frequencies.

Bonds absorb infrared at specific frequencies.

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A-level Chemistry (34 decks)

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