Identification Of Ions

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

Card preview (24)

Front (Question)

What are flames tests used for

Back (Answer)

Metal ions

Front (Question)

What are we testing for when using aqueous sodium hydroxide or aqueous ammonia

Back (Answer)

Cations.

Front (Question)

branch of chemistry that uses tests to identify gases and ions

Back (Answer)

Qualitative analysis

Front (Question)

Ammonia Test

Back (Answer)

Turns damp red litmus paper blue

Front (Question)

Carbon dioxide (CO2) Test

Back (Answer)

Turns limewater milky

Front (Question)

Chlorine (Cl2) Test

Back (Answer)

Bleaches snap litmus paper white

Front (Question)

Hydrogen (H2) Test

Back (Answer)

Makes a lighted splint go pop when held over

Front (Question)

Oxygen (O2) Test

Back (Answer)

Reignites a glowing splint

Front (Question)

Sulfur dioxide (SO2) Test

Back (Answer)

Turns acidified aqueous potassium manganate (VII) from purple to colourless

#10

Front (Question)

Identify carbonate CO3 2-

Back (Answer)

React with dilute acid the test for carbon dioxide gas (turns limewater milky) Effervescence, carbon dioxide produced

#11

Front (Question)

Identify Chloride in a solution Cl-

Back (Answer)

Acidify with dilute nitric acid and add aqueous silver nitrate White ppt.

#12

Front (Question)

Identify Bromide in a solution Br-

Back (Answer)

Acidify with dilute nitric acid then add aqueous silver nitrate Cream ppt.

#13

Front (Question)

Identify iodide in a solution I-

Back (Answer)

Acidify with dilute nitric acid, add aqueous silver nitrate Yellow ppt.

#14

Front (Question)

Identify nitrate in a solution NO3 -

Back (Answer)

Add aqueous sodium hydroxide then aluminium foil and warm carefully Ammonia produced (turns damp red litmus paper blue)

#15

Front (Question)

Identify sulphate in a solution SO4 2-

Back (Answer)

Acidify with dilute nitric acid then add aqueous barium nitrate White ppt.

#16

Front (Question)

Identify sulfite in a solution

Back (Answer)

Add a small volume of acidified aqueous potassium manganate (VII) The acidified aqueous potassium manganate (VII) turns from purple to colourless

#17

Front (Question)

Identify aluminium

Back (Answer)

In aqueous sodium hydroxide: white ppt. Soluble in excess giving a colorless solution In aqueous ammonia: white ppt. Insoluble in excess

#18

Front (Question)

Identify ammonium NH4+

Back (Answer)

In aqueous sodium hydroxide: ammonia produced on warming In aqueous ammonia: nothing

#19

Front (Question)

Identify calcium Ca 2+

Back (Answer)

In aqueous sodium hydroxide: white ppt. Insoluble in excess In aqueous ammonia: no ppt. Or very slight white ppt.

#20

Front (Question)

Identify chromium (III) Cr 3+

Back (Answer)

In aqueous sodium hydroxide: green ppt. soluble in excess In aqueous ammonia: grey-green ppt. Insoluble in excess

#21

Front (Question)

Identify copper Cu 2+

Back (Answer)

In aqueous sodium hydroxide: light blue ppt. Insoluble in excess In aqueous ammonia: light blue ppt. Soluble in excess giving a dark blue solution

#22

Front (Question)

Identify iron (II) Fe 2+

Back (Answer)

In aqueous sodium hydroxide: green ppt. Insoluble in excess, turns brown near surface on standing In aqueous ammonia: green ppt. Insoluble in excess, turns brown near surface on standing

#23

Front (Question)

Identify iron (III) Fe 3+

Back (Answer)

In aqueous sodium hydroxide: red-brown ppt. Insoluble in excess In aqueous ammonia: red-brown ppt. Insoluble in excess

#24

Front (Question)

Identify zinc Zn 2+

Back (Answer)

In aqueous sodium hydroxide: white ppt. Soluble in excess giving a colourless solution In aqueous ammonia: white ppt. Soluble in excess Giving a colourless solution