Convert the energy of E 054 eV to units of Joules and CV co

Convert the energy of E = 0.54 eV to units of Joules, and CV (coulomb Times volt), and kJ mol^-1.

Solution

E = 0.54 eV

(a). 0.54 eV = 0.54 x1.6 x10 ^-19 J

                  = 8.64 x10 ^-20 J

(b).0.54 eV = 0.54 x1.6 x10 ^-19 Coulomb -volt

                 = 8.64 x10 ^-20 CV     Since 1 J = 1CV

(c).1 mole = 6.023 x10 ²³ atoms

energy of 1 mole atoms = energy of 6.023 x10 ²³ atoms

                                  = 6.023 x10 ²³ x 0.54 eV

                                 = 6.023 x10 ²³ x0.54 x1.6 x10 ^-19 J

                                = 52.038 x10 ³ J

                                = 52.038 kJ

So, 0.54 eV = 52.038 kJ/mol