Write a balanced overall reaction given the unbalanced half‑reactions. Rb ⟶ Rb + Mg 2 + ⟶ Mg

Answer 1

Rb(s) ==> Rb⁺(aq) + e- ... oxidation half reaction (x2 to equalize electrons with reduction half reaction)

Mg²⁺(aq) + 2e- ==> Mg(s) ... reduction half reaction

2Rb(s) + Mg²⁺(aq) ==> 2Rb⁺(aq) + Mg(s) ... overall balanced reaction