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The following redox reaction is balanced by which set of coefficients? aZn + bNO3⁻ + cH⁺ → dNH4⁺ + eH2O + fZn²⁺

1. 1, 10, 1, 3, 1
2. 2, 10, 2, 3, 2
3. 4, 10, 1, 3, 4
4. 1, 10, 1, 3, 4

Correct answer: 1, 10, 1, 3, 4

Solution

The balanced reaction is: 1Zn + 10NO3⁻ + 12H⁺ → 1NH4⁺ + 3H2O + 1Zn²⁺. The coefficients match option D.

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