Your ability for solubility

Which of the following cannot be used to react with HCl to form CuCl2?

• Copper

• Copper(II) hydroxide

• Copper(II)oxide

• Copper(II) carbonate

During a chemistry demonstration, Ms Izzati accidentally dropped her gold ring into a beaker of sulfuric acid. What do you expect will happen to the ring?

• Hydrogen gas will be produced

• Carbon dioxide gas will be produced

• Water will be produced

• Nothing happens

Which of the following rods should she use to fish the gold ring out of the beaker?

• Aluminium rod

• Zinc rod

• Silver rod

• Iron rod

METALS UNREACTIVE IN ACID: Copper, Silver and Gold

• Jialat, really ah?

• I already know this Sis!

All group I and ammonium salts are soluble in water

• True

• False

All oxides and hydroxides are insoluble in water

• True

• False

All nitrates are soluble in water

• True

• False

SOLUBLE: All Group I, Ammonium and Nitrate compounds

Example:

- Lithium chloride, Lithium oxide

- Sodium hydroxide, Sodium nitrate

- Potassium carbonate, Potassium hydroxide

- Ammonium nitrate, Ammonium hydroxide

INSOLUBLE: All oxides/hydroxides except Group I/some Group II (Ca to Ra)

Example:

- Aluminium hydroxide, Aluminium oxide

• Oh ya, I forgot!

• I know already lah!

Which of the following is soluble?

(i) Lithium nitrate

(ii) Barium nitrate

(iiI) Sodium hydroxide

(iv) Calcium hydroxide

• i and ii only

• i, ii and iii only

• ii and iii only

• All of the above

All chlorides are soluble in water

• True

• False