Hot answers tagged

1 vote

2Pb+O2+2H2SO4=2PbSO4+2H2O how many electrons are transferred in this process?

The reaction is cited as follows: $\ce{2Pb(s) + O2(g) + 2H2SO4 (aq) -> 2 PbSO4(s) + 2H2O}$ $\ce{2 Pb -> 2 Pb++ + 4e-}$ $\ce{4 H+ + 4e- + O2 -> 2H2O}$ SO4 does not react. 4 electrons are ...
1 vote

How to determine the cell potential of chromium(III) — permanganate cell?

You have asked two questions. Regarding "which one is being reduced" and "which one is being oxidized", you can clarify that by using the Nernst equation $$\Delta E=\Delta E^\circ-\...
1 vote

What is the black sticky residue after heating copper hypophosphite?

Three months later I hope you are still interested and testing. The black residue is one (if any) of the disadvantages of this method of activation. From the literature and internet info available, ...
  • 11

Only top scored, non community-wiki answers of a minimum length are eligible