Subject: Physical Chemistry · Chapter: Electrochemistry · Topic: Electrochemistry – General · Exam: NET JUNE 2017 · Marks: 2 · Difficulty: Medium
The standard cell potential of cell, $\mathrm{Pt}\left|\mathrm{H}_{2}(\mathrm{g})\right| \mathrm{HBr}(\mathrm{aq})|\mathrm{AgBr}(\mathrm{s})| \mathrm{Ag}(\mathrm{s})$, was measured over a range of temperatures, and the data was fitted as $\mathrm{E}_{0}($ Volt $)=0.01-1 \times 10^{-4}(\mathrm{T}-298)-2 \times 10^{-6}(\mathrm{T}-298)^{2}$. The standard reaction entropy ( $\mathrm{JK}^{-1} \mathrm{mol}^{-1}$ ) and enthalpy ( $\mathrm{kJmol}^{-1}$ ) at 298 K are