a.Write the dissolution of NaI into water. b. In this cell,there are two possibl

Question

a.Write the dissolution of NaI into water.

b. In this cell,there are two possible oxidation reactions that might occur. Write two half reactions and their corresponding potential values.

c. Which of the two reactions will occur in electrolysis?

d. There are two possible reduction reactions that might occur. Write the two half reactions and their corresponding potential values.

e. Which of the two reactions will occur in electrolysis?

f. Write the overall reaction that will occur in the cell. Determine the standard potential for the overall reaction.

Explanation / Answer

a)

NaI(s) --> Na+(aq) + I-(aq)

b)

Na(s) --> Na+(aq) + e-

2I-(aq) --> I2 + e-

c)

in electrolysis...

2I-(aq) --> I2 + e- will occur

d)

Na+(aq) + e- --> Na(s)

I2 + e- --> 2I-(aq)

e)

in electroysis

Na+(aq) + e- --> Na(s) will occur

f)

overll:

Na+(aq) + e- --> Na(s)

2I-(aq) --> I2 + e-

Na+(aq) + e- + 2I-(aq) --> Na(s)+ I2 + e-

Na+(aq) + 2I-(aq) --> Na(s)+ I2

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