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Chemical Tests 2

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Total cards: 24•Content version: v3•Public deck•Updated: 8/1/2026

Card preview (24)

#1

Front (Question)

Alkenes test (C=C) – reagent?

Back (Answer)

Bromine water (Br2 aq)

#2

Front (Question)

Alkenes test – positive result?

Back (Answer)

Orange → colourless

#3

Front (Question)

Haloalkanes (R–X) – reagent?

Back (Answer)

Warm with silver nitrate (AgNO3) in ethanol

#4

Front (Question)

Chloroalkane result?

Back (Answer)

White ppt (AgCl), dissolves in dilute NH3

#5

Front (Question)

Bromoalkane result?

Back (Answer)

Cream ppt (AgBr), dissolves in conc NH3

#6

Front (Question)

Iodoalkane result?

Back (Answer)

Yellow ppt (AgI), insoluble in NH3

#7

Front (Question)

Alcohols (R–OH) – reagent?

Back (Answer)

Acidified potassium dichromate (H+/Cr2O7^2−)

#8

Front (Question)

Primary & secondary alcohol result?

Back (Answer)

Orange → green

#9

Front (Question)

Tertiary alcohol result?

Back (Answer)

No change (stays orange)

#10

Front (Question)

Aldehydes – Fehling’s test result?

Back (Answer)

Blue → brick-red ppt

#11

Front (Question)

Aldehydes – Tollens’ test result?

Back (Answer)

Silver mirror forms

#12

Front (Question)

Ketones – Fehling’s/Tollens’ result?

Back (Answer)

No visible change (no reaction)

#13

Front (Question)

Carboxylic acids (R–COOH) – reagent?

Back (Answer)

Sodium carbonate (Na2CO3)

#14

Front (Question)

Carboxylic acids – result?

Back (Answer)

Effervescence (CO2), turns limewater milky

#15

Front (Question)

Phenol – FeCl3 test result?

Back (Answer)

Purple solution

#16

Front (Question)

Phenol + NaOH result?

Back (Answer)

Dissolves to colourless solution

#17

Front (Question)

Phenol + Na2CO3 result?

Back (Answer)

No effervescence

#18

Front (Question)

Ammonium ion (NH4+) – reagent?

Back (Answer)

NaOH, warm

#19

Front (Question)

Ammonium ion – result?

Back (Answer)

Ammonia gas released, damp red litmus → blue

#20

Front (Question)

Lead(II) ion (Pb2+) – reagent?

Back (Answer)

Potassium iodide (KI)

#21

Front (Question)

Lead(II) ion – result?

Back (Answer)

Yellow ppt (PbI2)

#22

Front (Question)

Ag+ with NaOH?

Back (Answer)

Brown ppt

#23

Front (Question)

Ca2+ with NaOH?

Back (Answer)

White ppt

#24

Front (Question)

Cu2+ with NaOH?

Back (Answer)

Blue ppt