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5 Cards in this Set

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Identifying Cations (+ve)

•Sodium Hydroxide Solution


Zinc


◑White precipitate ◈Ppt dissolves in excess forming colourless solution


▷Aluminium


◑White precipitate ◈Ppt dissolves in excess forming colourless solution


▷Lead (II)


◑White precipitate ◈Ppt dissolves in excess forming colourless solution


▷Calcium


◑White precipitate ◈Ppt insoluble in excess


▷Copper (II)


◑Light blue precipitate ◈Ppt insoluble in excess


▷Iron (II)


◑Green precipitate ◈Ppt insoluble in excess


▷Iron (III)


◑Reddish brown precipitate ◈Ppt insoluble in excess


▷Ammonium


◑No precipitate (On heating, ammonia gas is given off. Moist Red litmus paper turn blue) ◈No change

Identifying Cations (+ve)

Aqueous ammonia


▷Zinc


◑White precipitate ◈Ppt dissolves in excess forming colourless solution


▷Aluminium


◑White precipitate ◈Ppt insoluble in excess ▷Lead (II)


◑White precipitate ◈Ppt insoluble in excess ▷Calcium


◑No ppt ◈No ppt


▷Copper (II)


Light blue precipitate Ppt dissolves in excess to form deep blue solution


▷Iron (II)


Green precipitate ◈Ppt insoluble in excess


▷Iron (III)


Reddish brown precipitate Ppt insoluble in excess

Identifying Anions (-ve)

▷Carbonate ion


Add dilute hydrochloric acid. Gas given off into limewater Effervescence is observed. Gas given off forms white ppt. Carbon dioxide is given off.


Nitrate ion


Add sodium hydroxide then add a piece of aluminium foil. Warm the mixture. Test the hassle with moist Red litmus paper Effervescence is formed. Moist Red litmus paper turns blue. Ammonia gas given off.


Sulfate ion


Add nitric acid, then Add barium nitrate solution White ppt of barium sulfate formed


Chloride ion


Add nitric acid then Add silver nitrate solution White ppt of silver chloride formed


▷Iodide ion


◑Add nitric acid and Add silver nitrate solution ◈Yellow ppt of iodide formed.

Identifying gases

▷Hydrogen (Colourless & odourless)


◑Lighted splint at mouth of test tube ◈Extinguish with 'pop' sound


▷Oxygen (Colourless & Odourless)


◑Insert glowing split into test tube ◈Glowing splint rekindled


▷Carbon dioxide (Colourless & Odourless)


◑Bubble gas through limewater ◈White ppt formed. Ppt dissolves upon further bubbling


▷Chlorine (Greenish-yellow & pungent gas)


◑Place moist blue litmus at mouth of test tube ◈Moist blue litmus turns red then bleached


▷Sulfur dioxide (Colourless & pungent gas)


Place filter paper soaked with acidified potassium manganate (VII) at mouth of test tube. Purple acidified potassium manganate (VII) turns colourless


▷Ammonia (Colourless & pungent gas)


Place moist red litmus paper at mouth of test tube Moist red litmus paper turns blue

Tests for Water

▷Heat sample in test tube. Place piece of cobalt (II) chloride at mouth of test tube ◇Cobalt (II) chloride paper changes from blue to pink.


▷Add few drops of sample to some anhydrous copper (II) sulfate ◇Anhydrous copper (II) sulfate changes from white to blue