When Metal a Is Placed in a Solution of Metal

question 7

Multiple Choice

When metal A is placed in a solution of metal ions B²⁺, a reaction occurs between A and B²⁺, and metal ions A²⁺ appear in the solution. When metal B is placed in acid solution, gas bubbles form on its surface. When metal A is placed in a solution of metal ions C²⁺, no reaction occurs. Which of the following reactions would not occur spontaneously?

• A) C(s) + 2^H+(aq) → H₂(g) + C+(aq)
• B) C(s) + A²⁺(aq) → A(s) + C²⁺(aq)
• C) B(s) + C²⁺(aq) → C(s) + B²⁺(aq)
• D) A(s) + 2^H+(aq) → H₂(g) + A²⁺(aq)
• E) B(s) + 2H⁺(aq) → H₂(g) + B²⁺(aq)

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