Question

Среди оксидов ВаО, Аl2О3, Сl2O7 найти основной, кислотный и амфотерный. Показать основность, кислотность и амфотерность соот- ветствующих оксидов уравнениями реакций.

Answer 1

Основный BaO
BaO+2HCl=BaCl2+H2O

Амфотерный Al2O3
Al2O3+6HCl=2AlCl3+3H2O
Al2O3+Na2O=2NaAlO2

Кислотный Cl2O7
Cl2O7+2NaOH=2NaClO4+H2O

Answer 2

Identifying Basic, Acidic, and Amphoteric Oxides

Among the oxides BaO, Al2O3, and Cl2O7, we can identify the basic, acidic, and amphoteric oxides as follows:

Basic Oxide: - BaO is a basic oxide. Basic oxides react with water to form a base. They also react with acids to form a salt and water.

Acidic Oxide: - Cl2O7 is an acidic oxide. Acidic oxides react with water to form an acid. They also react with bases to form a salt and water.

Amphoteric Oxide: - Al2O3 is an amphoteric oxide. Amphoteric oxides can act as both acidic and basic oxides depending on the conditions. They can react with both acids and bases to form salts and water.

Reactions Demonstrating Basicity, Acidity, and Amphoterism

1. Basicity of BaO: - BaO + H2O → Ba(OH)2 - BaO + 2HCl → BaCl2 + H2O - These reactions demonstrate the basic nature of BaO.

2. Acidity of Cl2O7: - Cl2O7 + H2O → 2HClO4 - Cl2O7 + 2NaOH → 2NaClO4 + H2O - These reactions demonstrate the acidic nature of Cl2O7.

3. Amphoterism of Al2O3: - Al2O3 + 6HCl → 2AlCl3 + 3H2O - Al2O3 + 2NaOH + 3H2O → 2Na[Al(OH)4] - These reactions demonstrate the amphoteric nature of Al2O3.

These reactions illustrate the basicity, acidity, and amphoteric nature of the respective oxides.

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