Techniques including X-ray crystallography, spectroscopy and magnetic measuremen

Question

Techniques including X-ray crystallography, spectroscopy and magnetic measurements demonstrate that mercury (1) is almost always found as the dimer, H2+. A concentration cell is one in which the only difference between the two half cells is the concentration of a reacting species. The following concentration cell was used for all measurements:

Hg | Hg(I) (CL) || Hg(I) (CR) | Hg

Where Hg(I) is present at a concentration CL In the left half-cell and at a concentration CR in the right half-cell. Stock solution A was prepared from 2.8 g or mercury (I) nitrate mono-hydrate, which is either HgNO3*H2O (FW 280.61) if Hg (I) is monatomic, or Hg2(NO3)2*2H2O (FW 561.22) if Hg(I) is diatomic. The salt was dissolved in 100.0 mL of 0.16 M HNO3 containing a few drops of liquid Hg to prevent oxidation of Hg(I). Solution B was a 1.6 M HNO3. Five concentration cells in the following table were set and their voltage was measured.

b)      Write the 2 half-reactions for the concentration cell and write the Nernst equation for the complete cell if Hg (I) is monatomic. (i.e. Hg+)

c)       Write the 2 half-reactions for the concentration cell and write the Nernst equation for the complete cell if Hg (I) is diatomic. (i.e. Hg2+)

Explanation / Answer

its too large quetion gonna take more than 1.5 hr... will do later

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