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?

Question

Quizplus · Accepted Answer

Since no reaction occurs when metal A is placed in a solution of metal ions C²⁺, it can be concluded that metal A is more reactive than metal C. Therefore, the reaction in option B can occur spontaneously, as metal A can displace metal C from its compound. Similarly, since metal B reacts with acid to form gas bubbles, it can be concluded that it is more reactive than hydrogen. Thus, reactions in options A, D, and E can occur spontaneously. However, in option C, metal B is less reactive than metal C, so it cannot displace it from its compound. Therefore, this reaction would not occur spontaneously.

When Metal a Is Placed in a Solution of Metal