Answer
Please see the work below.
Work Step by Step
The required chemical equations.
a. $I_2+Cl^-\rightarrow NR$
b. $Cl_2+2Br^-\rightarrow Br_2+2Cl^-$
c. $Br_2+2I^-\rightarrow I_2+2Br^-$
d. $Br_2+Cl^-\rightarrow NR$
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