Practice Industrial Preparation Of Hydrogen (6) - Hydrogen

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6 sample questions

Question 1.
What is produced when steam passes over red-hot coke?
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Think about the reaction involving water and carbon.
Question 2.
What does electrolysis of water produce?
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Consider the breakdown of water molecules.
3Question 3.
What is the main reaction for producing water gas?
- C + H2O → CO + H2
- 2H2O → 2H2 + O2
- H2 + O2 → H2O
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Think about the reaction involving coke and steam.
4Question 4.
Electrolysis is a method that requires what type of energy?
- True
- False
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Consider how electricity influences chemical reactions.
Question 5.
If 100 grams of coke are used with sufficient water, calculate the maximum amount of hydrogen gas that could be produced.
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Keep in mind the molar masses and the stoichiometry from the reaction.
Question 6.
Considering the cost of electricity for electrolysis is $0.20 per kWh, calculate the cost of producing hydrogen from 2 moles of water over a typical 2-hour electrolysis.
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Estimate energy requirements and use your cost knowledge.

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