Analyze the components of a voltaic electrochemical cell. A voltaic electrochemi

Question

Analyze the components of a voltaic electrochemical cell. A voltaic electrochemical cell is constructed using the following reaction. The half-cell components are separated by a salt bridge. Zn(s) + Pb2*(aq)Zn2*(aq) + Pb(s) Write the reactions that take place at the anode and at the cathode, the direction in which the electrons migrate in the external circuit, and the direction the anions in the salt bridge migrate. Use smallest possible integer coefficients. If a box is not needed, leave it blank. Enter the reaction that takes place at the anode. Include state symbols: Enter the reaction that takes place at the cathode. Include state symbols: In the external circuit, electrons migrate the Zn electrodethe Pb2t elect In the salt bridge, anions migrate the Zn compartment the Pb compartment

Explanation / Answer

at anode oxidation takes place

Zn(s) -----------> Zn+2(aq) + 2e-

at cathode reduction takes place

Pb+2(aq) + 2e- ------------> Pb(s)

electrons migrate from from the Zn electrode to the Pb+2 electrode

in the salt bridge anions migrates to the Zn compartment from the salt bridge

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