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Questions and Answers
Hydrogen can be collected by downward displacement of air.
Hydrogen can be collected by downward displacement of air.
False
Hydrogen is used as a fuel due to its low heat of combustion.
Hydrogen is used as a fuel due to its low heat of combustion.
False
A mixture of hydrogen and air can lead to an explosion.
A mixture of hydrogen and air can lead to an explosion.
True
When hydrogen burns, it produces a pop sound.
When hydrogen burns, it produces a pop sound.
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Hydrogen reacts with water to form Fe3O4 and H2.
Hydrogen reacts with water to form Fe3O4 and H2.
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Study Notes
Hydrogen Properties
- Hydrogen is lighter than air.
- Hydrogen is sparingly soluble in water.
- Hydrogen burns with a pale blue flame and produces a pop sound.
Reactivity of Hydrogen
- Hydrogen is produced when a metal from the reactivity series, such as sodium, reacts with water.
- Hydrogen reacts with metal oxides to form metal and water.
Redox Reactions
- Oxidation is the removal of hydrogen and the addition of oxygen.
- In redox reactions, oxidation and reduction occur simultaneously.
- Reduction is the removal of oxygen or the addition of hydrogen.
Additional Facts
- Hydrogen molecule is not monovalent.
- Nitric acid can be used to prepare hydrogen by its action on active metals.
- The reaction between hydrogen and nitrogen to form ammonia is reversible.
- Zinc can liberate hydrogen from water, acid, and alkali solutions.
- Hydrogen is not a supporter of combustion, but it is combustible.
- Hydrogen gas is not easily liquefiable.
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Description
Test your knowledge of hydrogen properties and reactions with this quiz. Fill in the blanks and indicate the correct statements about hydrogen in redox reactions.