1. What is the primary role of electrode (B) during the electrolysis of lead nitrate solution?
2. What is the primary role of the conjugate base (A⁻) formed after the titration of propanoic acid with sodium hydroxide reaches the equivalence point?
3. What is the primary role of the nuclear fusion reaction between deuterium and tritium?
Electrolysis — electrode reactions?
Pb²⁺ reduced at cathode; water oxidized at anode.
Lead nitrate solution — ions?
Contains Pb²⁺ and NO₃⁻ ions.
Electrolysis — product at cathode?
Metallic lead (Pb).
Electrolysis — product at anode?
Oxygen gas (O₂).
Small angle approximation — sin θ?
Approximately equal to θ (radians).
Small angle approximation — cos θ?
Approximately 1 - θ²/2.
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