Question

For a general electrochemical reaction of the type:
a A + B C + dD
Nernst equation can be written as:​

Answer 1

Answer:

$open sidebar</p><p>camera-retro-copy</p><p>Click Question to Get Free Answers</p><p></p><p>navigate-next</p><p>Watch 1 minute video</p><p>question-mark-1</p><p>Question From class 12 Chapter ELECTROCHEMISTRY</p><p></p><p></p><p>For a general electrochemical reaction of the type </p><p></p><p> Nernst equation can be written as</p><p>like-icon</p><p>13.4k LIKES</p><p></p><p>view-icon</p><p>3.2k VIEWS</p><p></p><p>share-icon</p><p>3.2k SHARES</p><p></p><p>check-circle</p><p>Text Solution</p><p></p><p></p><p></p><p></p><p>Answer :</p><p></p><p>B</p><p></p><p>Solution :</p><p></p><p>The</p><p></p><p>of a cell dependsd on the concentrations of ions and on gas pressures. For that reason, cell</p><p></p><p>provide a way to measure ion concentrations. For example, the</p><p></p><p>meter depends on the variation of cell</p><p></p><p>with hydrogen-ion concentraion. We can relate cell</p><p></p><p>for various concentrations of ions and vrious gas pressures to standard electrode potential by means of an equation first derived by the Ferman chemist Walther Nernst: </p><p></p><p> or</p><p></p><p> We can show from Nernst equation that the cell emf,</p><p></p><p>, decreases as the cell reaction proceeds if</p><p></p><p>is positive. As the reaction occurs in the voltaic cell, the concentrations of products increase and the concentrations of reactants decrease. Therefore,</p><p></p><p>and log</p><p></p><p>and log</p><p></p><p>increases. The second term the difference</p><p></p><p>, increases, so that the difference</p><p></p><p>, decreases. Thus, the cell emf,</p><p></p><p>, becomes smaller. Eventually the cell emf goes on the other hand , we can increase the</p><p></p><p>by increasing the concentrations of reactants and decreasing the concentration of products.$