Chemical analysis

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

Colour of an aqueous, dilute solution of copper(II) ions.

Back (Answer)

Blue

Front (Question)

Colour of an aqueous, dilute solution of iron(II) ions.

Back (Answer)

Green

Front (Question)

Colour of an aqueous, dilute solution of chromium(III) ions.

Back (Answer)

Green

Front (Question)

Colour of an aqueous, dilute solution of iron(III) ions.

Back (Answer)

Brown / yellow

Front (Question)

Colour of an aqueous, dilute solution of cobalt(II) ions.

Back (Answer)

Red / pink

Front (Question)

Colour of an aqueous, dilute solution of chromate(VI) ions.

Back (Answer)

Yellow

Front (Question)

Flame colour of Na+

Back (Answer)

Yellow

Front (Question)

Flame colour of K+

Back (Answer)

Lilac

Front (Question)

Flame colour of Ca2+

Back (Answer)

Yellow-red

#10

Front (Question)

Flame colour of Ba2+

Back (Answer)

Pale green

#11

Front (Question)

Flame colour of Li+

Back (Answer)

Red

#12

Front (Question)

Flame colour of Sr2+

Back (Answer)

Red

#13

Front (Question)

Flame colour of Rb+

Back (Answer)

Red-violet

#14

Front (Question)

State the observations for the reactions of Cr3+(aq) with aqueous sodium hydroxide.

Back (Answer)

NaOH(aq): Green precipitate Excess NaOH(aq): Precipitate dissolves to a dark green solution

#15

Front (Question)

State the observations for the reactions of Fe2+(aq) with aqueous sodium hydroxide.

Back (Answer)

NaOH(aq): Green precipitate, turning brown on exposure to air Excess NaOH(aq): Precipitate is insoluble

#16

Front (Question)

State the observations for the reactions of Fe3+(aq) with aqueous sodium hydroxide.

Back (Answer)

NaOH(aq): Red-brown precipitate Excess NaOH(aq): Precipitate is insoluble

#17

Front (Question)

State the observations for the reactions of Co2+(aq) with aqueous sodium hydroxide.

Back (Answer)

NaOH(aq): Blue precipitate, turning pink on standing Excess NaOH(aq): Precipitate is insoluble

#18

Front (Question)

State the observations for the reactions of Cu2+(aq) with aqueous sodium hydroxide.

Back (Answer)

NaOH(aq): Blue precipitate Excess NaOH(aq): Precipitate is insoluble

#19

Front (Question)

State the observations for the reactions of group 2 cations with aqueous sodium hydroxide.

Back (Answer)

NaOH(aq): White precipitate Excess NaOH(aq): Precipitate is insoluble

#20

Front (Question)

State the observations for the reactions of group 1 cations with aqueous sodium hydroxide.

Back (Answer)

No precipitate

#21

Front (Question)

State the observations for the reactions of Cr3+(aq) with aqueous ammonia.

Back (Answer)

NH3(aq): Green precipitate Excess NH3(aq): Precipitate slowly dissolves to a violet solution

#22

Front (Question)

State the observations for the reactions of Fe2+(aq) with aqueous ammonia.

Back (Answer)

NH3(aq): Green precipitate turning brown on exposure to air Excess NH3(aq): Precipitate is insoluble

#23

Front (Question)

State the observations for the reactions of Fe3+(aq) with aqueous ammonia.

Back (Answer)

NH3(aq): Red-brown precipitate Excess NH3(aq): Precipitate is insoluble

#24

Front (Question)

State the observations for the reactions of Co2+(aq) with aqueous ammonia.

Back (Answer)

NH3(aq): Blue precipitate Excess NH3(aq): Precipitate dissolves to a brown solution