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This lecture covers the conversion of chemical energy into electrical work, focusing on topics such as open circuit voltage, free enthalpy of reaction, lithium batteries, experimental determination of reaction variables, non-adiabatic systems, lead-acid accumulators, and fuel cells. It also explains the concept of electrical work in the context of batteries and the Faraday constant, electron involvement in reactions, and the derivation of Gibbs free energy in different scenarios. The lecture concludes with a discussion on a sustainable program for higher education in Africa.