1. Y

    Nernst equation and pH

    How do I calculate the dependence of potential on pH in half-reaction Cu2+ / CuI? As I suspect at pH>7 Cu(OH)2 will dominate and as for pH<7? 6CuI + IO3- + 6H+ = 6Cu2+ + 7I- + 3H2O IO3- / I- 1.08 V Cu2+ / CuI 0,86 V And also, can I calculate the overall potential E0 = E0 ox – E0 red?
  2. B

    pH using the Nernst Equation

    Today in my AP Chem class we worked on a question which asked for the pH in the cathode of this voltaic cell: Zn(s) + 2H+(aq) --> Zn2+(aq) + H2(g) They gave us the standard cell voltage as well as the actual voltage. Our process was to use the Nernst Equation to find Q, the reaction constant...
  3. T

    Nernst Equation

    I am completely stumpted on this question... not even sure where to start.. can someone give me a point in the right direction? When 1.0mL of 0.10mL/mol AgNO3 was added to 4.0mL of 2.0mol/L Na2Co3, the product formed in the reaction was Ag2CO3(s). From the measured potential of the cell, the...