Question

Write the balanced ionic equation and determine ΔE^o (cell) for the following half reaction equations:

2H⁺ (aq) + 2e^- --> H₂ (g)       E^o = 0 V

   Al⁺3 (aq) + 3e^- --> Al(s)       E^o = -1.66 V

Answer 1

$Al_ {(aq)} ^{+3} ​ +H_ 2 ​ −−>2H_ {(g}) +Al_ {(s)} +e^ −$

∆E°=-1.66-0 = -1.66V