1. Data Analysis: The cells in sections AI, AII, and AIlI were measured at non-s

Question

1. Data Analysis: The cells in sections AI, AII, and AIlI were measured at non-standard state (0.1 M). Without using your measured potentials, calculate the EMF of these cells at standard states (Ecell) using the value of standard reduction potentials found in your textbook. Calculate also the EMF of these cells at non-standard states (0.1M) (Ecel) using Nernst equation. Fill in Table-1 with your answers. Discuss question 1 is related this calculation. a. b. The Standard Electrode Potential of Zn is given as Zn2+(aq) +2e- Zn(s) Eo0.76V Assuming you don't have any other information of the standard reduction potentials, use the measured cell potentials to calculate the Standard Reduction Potential of the other half-reaction in each of the cells, Cu-Zn, Fe-Zn, Pb-Zn and unknown-Zn, and

Explanation / Answer

3a) Almost all cells begin at non-standard state, but an electrochemical cell starts operating at
standard state. On a day to day basis we often consider real world conditions in which case
non-standard conditions are very ideal hence we assume that non-standard state cell potentials
are same as standard cell potentials.

3b) Compare the measured potential values to the literature values and the errors in the measurement
can be accounted for (i) reading an error in voltameter (ii) unstable signal (iii) noting the reading
before all the electrons are exchanged

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