Silver dissolves in sulfuric acid to form silver sulfate and H2, but gold does not dissolve in s

step 1 Silver dissolves in sulfuric acid to form silver sulfate and hydrogen gas, but gold does not dis

Silver dissolves in sulfuric acid to form silver sulfate and...

Silver dissolves in sulfuric acid to form silver sulfate and $\mathrm{H}_{2},$ but gold does not dissolve in sulfuric acid to form gold sulfate. Which of the two metals is the better reducing agent?

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Key Concepts

Reducing Agent

A reducing agent (or reductant) is a substance that donates electrons during a chemical reaction, thereby undergoing oxidation itself. Its effectiveness is determined by how readily it loses electrons, making it capable of reducing other substances by forcing them to gain electrons.

Oxidation-Reduction (Redox) Reactions

Redox reactions involve a simultaneous process of oxidation and reduction. One species loses electrons (oxidation) while another gains electrons (reduction). Understanding redox reactions is fundamental in predicting the behavior of different chemical species, such as metals in acid solutions.

Standard Reduction Potential

The standard reduction potential is a numerical value that indicates the tendency of a chemical species to gain electrons and be reduced. Lower or more negative standard reduction potentials imply that a species is more willing to lose electrons, and thus serves as a better reducing agent.

Activity Series of Metals

The activity series is an empirical arrangement of metals, ordered by their reactivity and tendency to lose electrons. Metals higher in the activity series are more reactive and form ions more readily, making them better reducing agents compared to metals placed lower in the series.

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