Question:
(a) Classify following oxides as neutral, acidic, basic or amphoteric:

CO, B₂O₃, SiO₂, CO2, Al₂O₃, PbO₂, Tl₂O₃

(b) Write suitable chemical equations to show their nature.

Answer:

(1) CO = Neutral

(2) B₂O₃= Acidic

Being acidic, it reacts with bases to form salts. It reacts with NaOH to form sodium metaborate.

B₂O₃ + 2NaOH → 2NaBO₂ + H₂O

(3) SiO₂ = Acidic

Being acidic, it reacts with bases to form salts. It reacts with NaOH to form sodium silicate.

SiO₂ + 2NaOH → 2Na₂SiO₃ + H₂O

(4) CO₂= Acidic

Being acidic, it reacts with bases to form salts. It reacts with NaOH to form sodium carbonate.

CO₂ + 2NaOH → 2Na₂CO₃ + H₂O

(5) Al₂O₃ = Amphoteric

Amphoteric substances react with both acids and bases. Al₂O₃ reacts with both NaOH and H₂SO₄.

Al₂O₃ + 2NaOH → NaAIO₂

Al₂O₃ + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂O

(6) PbO₂= Amphoteric

Amphoteric substances react with both acids and bases. PbO₂ reacts with both NaOH and H₂SO₄.

PbO₂ + 2NaOH → Na₂PbO₃ + H₂O

PbO₂ + 2H₂SO₄ → 2PbSO₄ + 2H₂O +O₂

(7) Tl₂O₃ = Basic

Being basic, it reacts with acids to form salts. It reacts with HCl to form thallium chloride.

Tl₂O₃+ 6HCl → 2TlCl₃ + 3H₂O

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Question:
(a) Classify following oxides as neutral, acidic, basic or amphoteric:

CO, B₂O₃, SiO₂, CO2, Al₂O₃, PbO₂, Tl₂O₃

(b) Write suitable chemical equations to show their nature.

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Question: (a) Classify following oxides as neutral, acidic, basic or amphoteric: CO, B2O3, SiO2, CO2, Al2O3, PbO2, Tl2O3 (b) Write suitable chemical equations to show their nature.

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Question:
(a) Classify following oxides as neutral, acidic, basic or amphoteric:

CO, B₂O₃, SiO₂, CO2, Al₂O₃, PbO₂, Tl₂O₃

(b) Write suitable chemical equations to show their nature.