8.5.2 - Steps for Electrolysis Calculations
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Practice Questions
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What is the first law of Faraday?
💡 Hint: Think about how mass and electricity are related.
What is the formula for calculating charge (Q)?
💡 Hint: Remember, charge comes from current times time.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What law states that mass produced is proportional to charge passed?
💡 Hint: Think about the relationship between mass and electricity.
True or False: The second law of Faraday states that all substances produce the same mass under the same current.
💡 Hint: Consider the different identities of substances.
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Challenge Problems
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If a solution of silver nitrate (AgNO₃) undergoes electrolysis with a current of 4 A for 1500 seconds, how much silver (Ag) is produced? Use the half-equation Ag⁺ + e⁻ → Ag. Include all steps.
💡 Hint: Don't forget to convert current time to charge to get started.
Consider an electrolytic cell converting water into hydrogen and oxygen using an external power source. If 1000 C of charge has been passed, how many moles of hydrogen gas are produced? Use the reactions: 2H₂O → 2H₂ + O₂ for reduction (for H₂) and 2H₂O → O₂ + 4H⁺ + 4e⁻ for oxidation (for O₂).
💡 Hint: Relate the moles of electrons to the balanced half-reaction for hydrogen production.
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