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Given : NO(3)^(-) rarrNO(2)( acidic me...

Given `:`
`NO_(3)^(-) rarrNO_(2)(` acidic medium `), " "E^(-)=0.8V`
`NO_(3)^(-) rarr NO_(3)OH(` acidic medium`)" "E^(-)=0.74V`
At what `pH` the above two half reactions will have same `EMF` values ? Assume the concentration of all the species to be unity. `(` Take `0.059~~0.06)`

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To solve the problem of finding the pH at which the two half-reactions have the same EMF values, we can use the Nernst equation. Here’s a step-by-step breakdown of the solution: ### Step 1: Write the Half-Reactions and Their Standard EMF Values We have two half-reactions: 1. \( NO_3^- + 2H^+ + e^- \rightarrow NO_2 + H_2O \) with \( E^\circ = 0.8 \, V \) 2. \( NO_3^- + 7H^+ + 6e^- \rightarrow NO_3OH + 2H_2O \) with \( E^\circ = 0.74 \, V \) ...
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