Hydrogen and its Compounds - Advanced Concepts
Q. In which of the following reactions does hydrogen act as a reducing agent?
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A.
H2 + Cl2 → 2HCl
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B.
H2 + O2 → 2H2O
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C.
H2 + CuO → Cu + H2O
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D.
H2 + N2 → NH3
Solution
In the reaction H2 + CuO → Cu + H2O, hydrogen reduces copper(II) oxide to copper.
Correct Answer: C — H2 + CuO → Cu + H2O
Q. What is the main product when hydrogen reacts with halogens?
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A.
Hydrides
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B.
Acids
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C.
Salts
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D.
Oxides
Solution
When hydrogen reacts with halogens, the main product is hydrogen halides, which are acids.
Correct Answer: B — Acids
Q. What is the primary use of hydrogen in the Haber process?
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A.
To produce ammonia
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B.
To produce water
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C.
To reduce metals
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D.
To create hydrogen fuel
Solution
The Haber process uses hydrogen to synthesize ammonia (NH3) from nitrogen and hydrogen gas.
Correct Answer: A — To produce ammonia
Q. What type of bond is formed between hydrogen and oxygen in water?
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A.
Ionic bond
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B.
Covalent bond
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C.
Metallic bond
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D.
Hydrogen bond
Solution
The bond between hydrogen and oxygen in water is a covalent bond, where electrons are shared.
Correct Answer: B — Covalent bond
Q. Which of the following is a strong acid formed from hydrogen?
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A.
H2O
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B.
HCl
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C.
H2S
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D.
CH4
Solution
Hydrochloric acid (HCl) is a strong acid formed from hydrogen.
Correct Answer: B — HCl
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