which statement about oxidation and reduction in a voltaic cell is true? both oxidation and reduction occur at the anode.
both oxidation and reduction occur at the cathode.
oxidation occurs at the anode and reduction occurs at the cathode.
oxidation occurs at the cathode and reduction occurs at the anode.

I believe the correct answer would be that oxidation occurs at the anode and reduction occurs at the cathode. A voltaic cell uses chemical reaction in order to produce electrical energy. It is in the anode that the oxidation reaction happens while in the cathode reduction happens.

I’m really not sure what’s the answer. sorry

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -