n what circumstance
would a voltmeter read a negative voltage when connected to an
anode and a cathode in an electrochemical cell?
The black (-) lead is
connected to an electrode where an oxidation is occuring, and the
red (+) lead is connected to an electrode where a reduction is
occuring.
The black (-) lead is
connected to an electrode where an reduction is occuring, and the
red (+) lead is connected to an electrode where a oxidation is
occuring.
Both leads are
connected to electrodes where oxidation reactions are
occuring.
Both leads are
connected to electrodes where reduction reactions are
occuring.
A negative potential
reading is impossible.