CHEM calculations

• Calculating cell potential 


  Voltaic cell: best reduction + best oxidation = cell potential always positive in a voltaic cell
• Spontaneity 


  = -(# of e- transferred)( F Constant)(cell potential volts) you need to find number of electrons transferred from the half equations.
• Electroplating 


  charge = current x time(sec)
• calculate pH of strong acid/base


  pH = -log [H+] & pOH=-log [OH-]