I’m confused about what you were saying regarding the greatest magnitude half reaction being the cathode end. The zinc half reaction has the highest magnitude in this example , but it’s the anode?
then the mobility of cations and anions wont be the same as it would have been in the case of inert electrolyte kcl in the salt bridge so there wont be any disbalance of charge on both sides thats how the salt bridge completes the internal circuit to maintain its electrical neutrality. in cse of kcl rods they will show independent chem rex in each bath and also the mobility of k+ and cl- wont be that same creating further disbalance of charge other that what was already being created by the main circuit.
Back in the day, current was measured as the movement of positive charge. This was due to a lack of understanding at the time. In reality, current is caused by the flow of negatively charged electrons. But because of tradition, we keep measuring flow as the movement of positive charge, even when no physical positively charged molecule is moving/present. Basically: current is defined as the movement of positive charge, so it moves in the opposite direction that electrons move.
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What is the emax equaition he was using?
I’m confused about what you were saying regarding the greatest magnitude half reaction being the cathode end. The zinc half reaction has the highest magnitude in this example , but it’s the anode?
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PremedHQ Science Academy : Very good video. Can this battery be recharged ? will the KCl do now move in reverse as you charge the battery?? Thanks.
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Why is a salt bridge needed? Why can't I place to KCL- sticks inside both beakers?
then the mobility of cations and anions wont be the same as it would have been in the case of inert electrolyte kcl in the salt bridge so there wont be any disbalance of charge on both sides thats how the salt bridge completes the internal circuit to maintain its electrical neutrality. in cse of kcl rods they will show independent chem rex in each bath and also the mobility of k+ and cl- wont be that same creating further disbalance of charge other that what was already being created by the main circuit.
will the salt bridge run out?
yes eventually
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Sorry you lost me when you started speaking about current? What exactly is current made up of?
Back in the day, current was measured as the movement of positive charge. This was due to a lack of understanding at the time. In reality, current is caused by the flow of negatively charged electrons. But because of tradition, we keep measuring flow as the movement of positive charge, even when no physical positively charged molecule is moving/present.
Basically: current is defined as the movement of positive charge, so it moves in the opposite direction that electrons move.