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Difficulty: MediumOxygen, Ozone, and Classification of Oxides

Match each oxygen-containing compound listed on the left with its corresponding chemical classification or characteristic reaction behavior on the right.

  • P4O10\text{P}_4\text{O}_{10}Acidic oxide that reacts with water to yield a triprotic acid
  • CaO\text{CaO}Basic oxide that reacts exothermically with water to form an alkaline solution
  • CO\text{CO}Neutral oxide that fails to form salts when exposed to acids or alkalis
  • H2O2\text{H}_2\text{O}_2Peroxide species that decomposes releasing oxygen gas

Answer

P4O10\text{P}_4\text{O}_{10} matches 'Acidic oxide that reacts with water to yield a triprotic acid'; CaO\text{CaO} matches 'Basic oxide that reacts exothermically with water to form an alkaline solution'; CO\text{CO} matches 'Neutral oxide that fails to form salts when exposed to acids or alkalis'; H2O2\text{H}_2\text{O}_2 matches 'Peroxide species that decomposes releasing oxygen gas'.
Each item matches its corresponding behavior based on oxide and oxygen compound classification: P4O10\text{P}_4\text{O}_{10} is an acidic oxide producing triprotic acid; CaO\text{CaO} is a basic oxide producing an alkaline hydroxide; CO\text{CO} is a neutral oxide; H2O2\text{H}_2\text{O}_2 is a peroxide species that liberates oxygen gas upon decomposition.

Step-by-Step Solution

1
Classify P4O10\text{P}_4\text{O}_{10} based on its reaction with water.
P4O10\text{P}_4\text{O}_{10} is a non-metal oxide (phosphorus(V) oxide) which reacts with water to yield H3PO4\text{H}_3\text{PO}_4, a triprotic acid.
Non-metal oxides in high oxidation states act as acid anhydrides.
2
Classify CaO\text{CaO} based on its acid-base character.
CaO\text{CaO} is an alkaline earth metal oxide that reacts exothermically with water to form the alkaline base Ca(OH)2\text{Ca(OH)}_2.
Metallic oxides typically display basic chemical behavior.
3
Determine the chemical reactivity of CO\text{CO}.
CO\text{CO} is a non-metal oxide that does not react with acids or alkalis to form salts, making it a neutral oxide.
Certain low-oxidation non-metal oxides are neutral.
4
Identify the nature of H2O2\text{H}_2\text{O}_2.
H2O2\text{H}_2\text{O}_2 contains the peroxide group with oxygen in the −1-1 oxidation state and decomposes to liberate oxygen gas.
Peroxides undergo decomposition to yield oxygen and water.

Key Concept

Classification of Oxides (Acidic, Basic, Neutral) and Peroxides
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Topics

Oxygen, Ozone, and Classification of Oxides

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