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

question 16

Multiple Choice

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

• A)Mg²⁺ + Ca \(\rarr\) Mg + Ca²⁺
• B)Au + 3K⁺ \(\rarr\) Au³⁺ + 3K
• C)2Al³⁺ + 3Fe \(\rarr\)2Al + 3Fe²⁺
• D)Cu + 2H⁺ \(\rarr\) Cu²⁺ + H₂
• E)Ni²⁺ + 2Fe²⁺(aq)\(\rarr\) Ni(s)+ 2Fe³⁺(aq)

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