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. sketch a voltaic cell for each redox reaction. label the anode and cathode and indicate the half-reaction that occurs at each electrode and the species present in each solution. also indicate the direction of electron flow

Answer :

The silver begins with a (+1) oxidation number and ends in its neutral condition of (0). Lead begins in its neutral state (0) and ends with an oxidation number of (+2). Lead is being oxidized while silver is being reduced. lead will serve as the anode and the silver node as the cathode.

2Ag+ (aq) + Pb (s) → 2Ag Pb2+

An atom would have a certain charge if all of its links to other atoms were fully ionic, which is known as its oxidation state or oxidation number. It describes how much an atom in a chemical compound has oxidized (lost electrons). The oxidation state might theoretically be zero, positive, or negative. Owing to the fact that many bonds in nature display high ionicity despite the absence of completely ionic bonds, the oxidation state is a good indicator of charge.

The formal charge on an atom, as well as any other actual atomic properties, are not represented by the oxidation state of that atom. This is especially true for high oxidation states, where the ionization energy needed to form a multiply positive ion is far higher than the energies present in chemical processes.

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