oxides

Which solubility rule is true for oxides?

• All are soluble except those of sodium, potassium and ammonium.

• All are insoluble except those of sodium, potassium and ammonium.

• All are soluble except those of silver and lead,

• All are soluble except those of calcium, lead and barium.

Select the statements that are true of basic oxides.

• They are oxides of metals.

• They dissolve in water to form acids.

• They react with acids to form salt and water.

• They react with bases to form salts and water.

Which statement is false of acidic oxides?

• They are oxides of non-metals.

• They dissolve in water to form acids.

• They do no react with acids or alkalis.

• They react with alkalis to form salt and water.

Carbon monoxide, water and nitrogen monoxide are examples of _____________ oxides.

Select the amphoteric oxides.

• aluminium oxide

• carbon dioxide

• lead(II) oxide

• potassium oxide

• zinc oxide

Select the statements that are true of amphoteric oxides.

• They are mostly insoluble in water.

• They do not react with acids and alkalis.

• They react with acids to form salt and water.

• They react with akalis for form salt and water.

Which is the ionic equation of the reaction between hydrochloric acid and sodium hydroxide?

• Na⁺ (aq) + Cl^- (aq) --> NaCl (aq)

• H⁺ (aq) + OH^- (aq) --> H₂O (l)

• H^- (aq) + OH⁺ (aq) --> H₂O (l)

Select the precipitation reaction(s).

• Ba²⁺ (aq) + 2NO₃^- (aq) --> Ba(NO₃)₂ (aq)

• Ca²⁺ (aq) + SO₄^2- (aq) --> CaSO₄ (s)

• Ca²⁺ (aq) + 2Cl^- (aq) --> CaCl₂ (aq)

• Pb²⁺ (aq) + Cl^- (aq) --> PbCl₂ (s)

• Mg²⁺ (aq) + OH^- (aq) --> Mg(OH)₂ (s)