(a)
Interpretation: The reaction that will occur if crystals of
Concept Introduction : The standard cell potential for the reaction between iodine and NaCl should be greater than zero for the reaction to occur. Iodine
(a)

Answer to Problem 40E
The reaction is non-spontaneous.
Explanation of Solution
The half reactions are as follows:
So, no reaction occurs when solid iodine is added to
(b)
Interpretation: The reaction that will occur when
Concept Introduction : The standard cell potential for the reaction between
(b)

Answer to Problem 40E
The reaction is spontaneous and balanced equation for the reaction is,
Value of
Explanation of Solution
The half cell reactions are as follows:
Chlorine gas will dissolve in NaI solution as the standard cell potential is greater than zero. Hence, standard cell potential of the reaction is
Now calculate
For the reaction, n =2 and
Put the above values in equation (1).
Therefore, value of
Now calculate K.
Hence, value of K is
(c)
Interpretation: The reaction that will occur if a silver wire is placed in a solution of
Concept Introduction : The standard cell potential for the reaction between silver and
(c)

Answer to Problem 40E
The reaction is non-spontaneous.
Explanation of Solution
The half reactions are as follows:
So, no reaction occurs when silver wire is placed in a solution of
(d)
Interpretation: The reaction that will occur if an acidic solution of
Concept Introduction: The standard cell potential for the reaction between acidic solution of
(d)

Answer to Problem 40E
The reaction is spontaneous. The balanced reaction is,
Value of
Explanation of Solution
The half cell reactions are as follows:
Reaction occur between acidic
Now calculate
For the reaction, n =4 and
Put the above values in equation (1).
Therefore, value of
Now calculate K.
Hence, value of K is
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Chapter 11 Solutions
Chemical Principles
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