Question

Якому з наведених нижче оксидів відповідає основа? K2O P205 NO2 Mn207​

Answer 1

Ответ:

К2О

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Answer 2

Identifying Basic Oxides

The basic oxides among the given compounds can be determined based on their chemical properties. Basic oxides are compounds that react with water to form a base. Let's examine each compound to identify the basic oxide:

1. K2O: - Potassium oxide (K2O) is a basic oxide. When it reacts with water, it forms a strong base, potassium hydroxide (KOH). - *Source: Chemistry LibreTexts*

2. P2O5: - Phosphorus pentoxide (P2O5) is an acidic oxide. It reacts with water to form phosphoric acid, which is a weak acid. - *Source: Chemistry LibreTexts*

3. NO2: - Nitrogen dioxide (NO2) is an acidic oxide. It dissolves in water to form nitric acid, which is also a weak acid. - *Source: Chemistry LibreTexts*

4. Mn2O7: - Manganese heptoxide (Mn2O7) is an acidic oxide. It reacts with water to form permanganic acid, which is a strong acid. - *Source: Chemistry LibreTexts*

Conclusion

Based on the chemical properties of the compounds, K2O corresponds to a basic oxide, while the others (P2O5, NO2, Mn2O7) correspond to acidic oxides.