Under standard conditions, what reaction occurs, if any, when each of the following operations are performed? For the reactions that occur, write a balanced, net ionic equation and calculate ℰ°, ΔG°, and K at 25°C. (Use the lowest possible coefficients. Include states-of-matter at 25°C and 1 atm in your answer. If an answer does not exist, enter DNE.) (a) Cl2 gas is bubbled into a solution of NaI. ℰ°      V ΔG°      kJ K   (c) A silver wire is placed in a solution of CuCl2. ℰ°      V ΔG°      kJ K    (d) An acidic solution of FeSO4 is exposed to air. ℰ°      V ΔG°      kJ K

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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.