Question

Given: h2+ br2 -> 2hbr with cell potential 1.05V How much energy you expect to get...

Given: h2+ br2 -> 2hbr with cell potential 1.05V

How much energy you expect to get per mole of reactant with this reaction?
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Answer #1

H2 + Br2 -----------> 2 HBr , Eo = 1.05 V

number of electrons transfered =2

F = faraday = 96485 C

free energy change = - n F Eo x 10^-3 kJ / mol

                                = -2 x 96485 x 1.05 x 10^-3

                                = -202.6 kJ / mol

energy expected = -202.6 kJ / mol

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