Final answer:
Zinc can reduce the greatest number of moles of the Ag⁺ ion. We must consider the stoichiometry of the redox reactions involving zinc and these ions. Option C is correct.
Step-by-step explanation:
In order to determine which ion can be reduced by 1 mol of zinc, we need to look at the reduction half-reactions of each ion. The reduction potential of an ion determines its ability to be reduced. The higher the reduction potential, the greater the ability to be reduced.
Based on the reduction half-reactions, the greatest number of moles can be reduced by zinc is the **Ag⁺** ion. The reduction half-reaction for Ag⁺ is:
Ag⁺ + e⁻ → Ag
As zinc has a higher reduction potential than aluminum, lead, and chlorine, it can only reduce 1 mol of each ion, while it can reduce a greater number of moles of Ag⁺.
A 1 mol sample of zinc can reduce the greatest number of moles of which of the following ions? (A) Al³⁺ (B) Pb²⁺ (C) Ag⁺ (D) Cl⁻
To determine which ion can be reduced by the most moles by 1 mol of zinc, we must consider the stoichiometry of the redox reactions involving zinc and these ions. Zinc has a valence of 2, meaning that one mole of zinc can provide 2 moles of electrons.