The cell potential for the given cell at 298 K is 0.31 V. The pH of the acidic solution is found to be 3, whereas the concentration of is . The value of x is . (Given: , )

Question

The cell potential for the given cell at 298 K  is 0.31 V. The pH of the acidic solution is found to be 3, whereas the concentration of  is . The value of x is . (Given: , )

Canvas Classes · Accepted Answer

Strategy:
 Apply the Nernst Equation to find an unknown concentration given pH and cell EMF.

Step 1: Write the expression
Reaction: , , .

Step 2: Substitute knowns
, .

The magnitude or the requested value of  is 7 or -7 depending on 	ext convention. Given answer 7.

More questions from Electrochemistry