An experiment to determine an activity series was carried out using lead, gold,

Question

An experiment to determine an activity series was carried out using lead, gold, and lithium. The following results were obtained: Li(s) + cold water: rapid reaction, metal dissolved and produced bubbles of hydrogen gas. Au(s) + cold water: no reaction Pb(s) + cold water: no reaction Pb^2+ (aq) + Li(s): rapid reaction, light colored lithium metal dissolved and darker colored lead metal appeared Au^3+ (aq) + Pb(s): slow reaction, dark colored lead metal disappeared and yellow colored gold metal appeared Li^+(aq) + Au(s): no reaction Write the oxidation half reactions for Pb, Au, and Li: Pb(s) rightarrow Au(s) rightarrow Li(s) rightarrow

Explanation / Answer

Write the oxidation half reactions of Pb ,Au and Li

half–reactions

1. Pb Pb2+ + 2e–

2. Au(s) Au3+ + 3e

3 .Li(s) Li+ + e

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