A student constructs a galvanic cell that has a strip oflead metal immersed in a

Question

A student constructs a galvanic cell that has a strip oflead metal immersed in a solution of 0.1MPb(NO3)2 as one half-cell and a strip of zincmetal immersed in a solution of 0.1 MZn(NO3)2 as the other half-cell. The measuredcell potential is less than zero when the positive terminal of thevoltmeter is attached to the zinc strip and the negative terminalis attached to the lead strip. Which half-cell is the anode (Pb or Zn)? Which half-cell is the cathode? Do the electrons flow from Zn to Pb or vice versa? Which metal is more "active" Zn or Pb? A student constructs a galvanic cell that has a strip oflead metal immersed in a solution of 0.1MPb(NO3)2 as one half-cell and a strip of zincmetal immersed in a solution of 0.1 MZn(NO3)2 as the other half-cell. The measuredcell potential is less than zero when the positive terminal of thevoltmeter is attached to the zinc strip and the negative terminalis attached to the lead strip. Which half-cell is the anode (Pb or Zn)? Which half-cell is the cathode? Do the electrons flow from Zn to Pb or vice versa? Which metal is more "active" Zn or Pb?

Explanation / Answer

Anode is Zn Cathode is Pb Electrons flow from Zn to Pb Reactivity of a metal      1 / E0Red                  Zn has lower reduction potential, so it is more reactive.                Zn has lower reduction potential, so it is more reactive.

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