←山 Ca app.101edu.coQuestion 12 of 20SubmitWhich electrode will gain mass while a voltaic cell runs and why? (Choose thebest answer.)A) The cathode because it undergoesreduction, which means electrons are gainedwhich add mass.B) The cathode because it undergoesreduction, which means that the metallic ionsplate onto the cathode.C) The anode because it undergoes reduction,which means that the metallic ions plate ontothe anode.D) The anode because it undergoes oxidation,which means that it will lose electrons.E) Neither electrode will gain mass becauseelectrons are lost at the same rate as metallicions are plated.MacBook ProDD吕口888000F10F11F12F9escF5F6F7F8F1F3F4002

Redox reactions are the reaction in which oxidation and reduction process take place simultaneously. Oxidation Reduction Gain of oxygen Removal of oxygen Removal of hydrogen Addition of hydrogen Increases in oxidation number Decreases in oxidation number Loss of electrons Gain of electrons Oxidation takes place at the anode and reduction takes place at the cathode. A voltaic cell is a cell in which oxidation and reduction take place in different beakers. This type of cell is used to generate electricity from chemical reactions. Example: Zn and Cu electrodes in ZnSO4 and CuSO4 solution respectively. When the Zn electrode is dipped in zinc solution and the Cu electrode dipped in the copper solution. Oxidation of zinc takes place at the anode. Zn→Zn2++2e- Reduction of copper takes place at the cathode. Cu+2e-→Cu At the cathode, copper ions are deposited. Copper aqueous ions are deposited at the cathode in the form of copper solid by gaining electrons. Answer Hence, option b) is correct.