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Which One of the Following Reactions Will Occur Spontaneously at Standard-State

Question 90

Multiple Choice

Which one of the following reactions will occur spontaneously at standard-state conditions and 25°C?

A) Mg²⁺+ Ca $\to$ Mg + Ca²⁺
B) Au + 3K⁺ $\to$ Au³⁺ + 3K
C) 2Al³⁺ + 3Fe $\to$ 2Al + 3Fe²⁺
D) Cu + 2H⁺ $\to$ Cu²⁺+ H₂

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