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Questions and Answers
Which gas is produced when sulfur reacts with hydrogen?
Which gas is produced when sulfur reacts with hydrogen?
What is the product of the reaction between copper oxide and hydrogen gas?
What is the product of the reaction between copper oxide and hydrogen gas?
Why is hydrogen used as a fuel?
Why is hydrogen used as a fuel?
Why can't hydrogen be safely collected by downward displacement of air?
Why can't hydrogen be safely collected by downward displacement of air?
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What causes the 'pop' sound when hydrogen burns?
What causes the 'pop' sound when hydrogen burns?
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Study Notes
Properties of Hydrogen
- Hydrogen is lighter than air, making it buoyant and useful for applications such as airships.
- It is sparingly soluble in water, which limits its concentration in aqueous solutions.
Combustion of Hydrogen
- When hydrogen burns, it produces a pale blue flame and produces a characteristic 'pop' sound, indicating its reaction with oxygen to form water.
Reactivity of Hydrogen
- Metals, such as sodium, are more reactive than hydrogen in the reactivity series and can produce hydrogen gas when they react with water.
- Hydrogen reacts with metal oxides, resulting in the formation of metal and water.
Redox Reactions
- Oxidation is defined as the removal of hydrogen and the addition of oxygen from a substance.
- In redox reactions, oxidation and reduction processes occur simultaneously, showcasing the interdependence of these reactions.
True/False Statements
- A hydrogen molecule is diatomic (H₂), making the statement that it is monovalent false.
- The removal of hydrogen from a substance is correctly termed reduction, hence the statement is true.
- Nitric acid is capable of liberating hydrogen from active metals, so the assertion it cannot is false.
- The synthesis of ammonia from hydrogen and nitrogen is a reversible reaction, indicating the statement is true.
- Zinc can react with water, acids, and bases to release hydrogen gas, confirming the statement as true.
- Hydrogen is combustible and supports combustion, but it is not itself a supporter of combustion only, rendering the statement false.
- Hydrogen gas can be easily liquefied, which is a true observation regarding its properties.
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Description
Test your knowledge of hydrogen properties and redox reactions with this quiz. Fill in the blanks and indicate the correct statements to demonstrate your understanding of these chemical concepts.
