Question

The reducing power of a metal depends on various factors. Suggest the factor which makes Li, the strongest reducing agent in aqueous solution.

• A. Sublimation enthalpy
• B. Ionisation enthalpy
• C. Hydration enthalpy
• D. Electron – gain enthalpy

Answer 1

Answer: (C)

Hydration enthalpy

Answer 2

: With the small size of $Li^{+}$ion, lithium has the highest hydration enthalpy which accounts for its high negative $E^{o}$value and its high reducting power.