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March 28, 2017

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The two half-reactions for the LeClanche dry cell battery are shown below. Describe the direction of spontaneous electron flow in this electrochemical cell.

Zn(s) ---> Zn2+(aq) + 2e-
2NH4+(aq) + 2e- ---> 2NH3(g) + H2(g)

  • CHEMISTRY - ,

    Electrons flow from the anode (Zn electrode) through a wire and the electrical circuit to the cathode (Carbon electrode) which is connectd internally to the NH4^+ paste.

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