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For a reaction that occurs on its own, the values of ΔG, the equilibrium constant (K), and E°cell are, respectively,

1. negative, greater than 1, negative
2. negative, less than 1, negative
3. positive, greater than 1, negative
4. negative, greater than 1, positive

Correct answer: negative, greater than 1, positive

Solution

A spontaneous reaction is characterized by a negative ΔG, indicating that it can occur without external energy. A greater than 1 equilibrium constant (K) suggests that the products are favored at equilibrium, while a positive E°cell reflects a favorable electrochemical reaction, supporting the spontaneity of the process.

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