equations and reactions summary

Question

For each of the following ionic solids, write a balanced overall equation to show their formation from their elements. Write two balanced half reactions showing the oxidation and reduction process of the ions being formed.

Sodium bromide

i. OVERALL:

ii. OXIDATION:

iii. REDUCTION:

Aluminum chloride

i. OVERALL:

ii. OXIDATION:

iii. REDUCTION:

Answer 1

Sodium bromide (NaBr)

Overall: Na + 1/2 Br₂ ==> NaBr

Oxidation: Na ==> Na⁺ + e-

Reduction: Br + e- ==> Br^-

Aluminum chloride (AlCl₃)

Overall: 2Al + 3Cl₂ ----> 2AlCl₃

Oxidation: 2Al ==> 2Al³⁺ + 6e-

Reduction: 3Cl₂ + 6e- ==> 6Cl^-