4) A voltaic cell is constructed using the reaction a) Sketch the voltaic cell. Zn (s) + Ni¹2 (aq) → Zn¹2 (aq) + Ni (s) b) Which half-reaction occurs at the anode? c) Which half-reaction occurs at the cathode? d) Calculate Eºcell.

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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.