How much current is necessary to produce H₂ gas at the rate of 1 cm³ per second under STP?
Correct answer: C. 8.61 A
- A. 4.305 A
- B. 17.22 A
- C. 8.61 A
- D. 2.1525 A
Explanation
First, find the moles of H₂ produced per second using the molar volume at STP. Then use the half-reaction 2H⁺ + 2e⁻ → H₂ to find the moles of electrons needed per second. Finally, convert moles of electrons to charge (Coulombs) ,and then to current (Amperes) ,which yields approximately 8.61 A.
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