postlab9 - 1) The U tube filled 1M N H4NO3, called a salt...

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1) The U tube filled 1M NH4NO3, called a salt bridge, allows electrical neutrality to be preserved as the cell reaction occurs. Propose an explanation for how the salt bridge functions; and tell what would happen, and why it would happen if the salt bridge were not present. The salt bridge functions by replacing electrons in solution, in the anode, and in the cathode the salt bridge accepts electrons. By adding anions to the anode, the salt bridge keeps the anode at a constant amount of electrons and therefore, charge. The salt bridge also adds cations to the cathode, moving the electrons from the cathode to the anode through the salt bridge and keeping the cathode at a constant amount of electrons and therefore, charge. Without a salt bridge the two half cells would change in charge, that is, the anode would decrease in electrons and the cathode would increase because there is no transfer via salt bridge. This would stop the electrochemical reaction and the voltmeter would read 0V. 2)
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postlab9 - 1) The U tube filled 1M N H4NO3, called a salt...

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