Determine which of the following pairs of reactants will result in a spontaneous reaction at 25°C. A) I^-(aq) + Zn²⁺(aq) B) Ba(s) + Mn²⁺ (aq) C) H₂(g) + Cd²⁺(aq) D) Ag(s) + Ni²⁺(aq) E) All of the above pairs will react.

Question

Quizplus · Accepted Answer

This is the only pair that involves a metal and a salt with a different metal. The reduction potentials for Ba and Mn show that Ba has a more negative reduction potential, which means it is a better reducing agent and will react spontaneously with Mn²⁺ (aq).

Determine Which of the Following Pairs of Reactants Will Result