Problem: Consider the following unbalanced oxidation-reduction reactions in aqueous solution:Ag+(aq) + Li(s) → Ag(s) + Li+(aq)Fe(s) + Na+(aq) → Fe2+(aq) + Na(s)K(s) + H2O(l) → KOH(aq) + H2(g)Balance the third reaction.

FREE Expert Solution

Given: K(s) + H2O(l) → KOH(aq) + H2(g)


*Before balancing the redox reaction:

 ignore H+, OH-, and H2O in the starting reaction


Half-reactions:


  • K(s) → K+(aq) + 1e-                                                               
  • 2H+(aq) + 2e-   → H2(g) 


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Problem Details
Consider the following unbalanced oxidation-reduction reactions in aqueous solution:
Ag+(aq) + Li(s) → Ag(s) + Li+(aq)
Fe(s) + Na+(aq) → Fe2+(aq) + Na(s)
K(s) + H2O(l) → KOH(aq) + H2(g)

Balance the third reaction.

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