Consider the following electrochemical cell at standard condition.
The couple 
represents quinhydrone electrode, the half cell reaction is given below:
[Given: 
and 
.o6v]
The 
value of the ammonium halide salt ( 
) used here is . (nearest integer)
Text Solution
Verified by Experts6
(6)
The cell reaction is:
The Nernst equation for the reaction can be expressed as:
Simplifying, we obtain:
Given data includes:
Standard potential for 
,
Using the cell potential and the standard potential, we calculate:
This established pH must now relate to the buffer equation involving 
, at
Given the concentration 
, we substitute into the equation:
Simplifying further, the equation resolves to:
Thus, the calculated 
value of the ammonium halide salt 
is 6.
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