In a historical industrial process Co(CO)4H is generated in-situ from CoI2, CO and H2O. By-products are CO2 and HI. Give the two relevant half-equations and then construct the full redox equation.

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Batteries

A battery is simply an electrochemical cell or group of cells that generate electric current. Batteries are the devices that generate current using redox reactions. These reactions proceed by the transfer of electrons. An ideal battery or cell should produce a constant voltage. A battery should actually be light in weight.