(5 marks) Write a stepwise procedure to make a Ag/AgCl reference electrode. Be as specific as you can to obtain full marks. You will have access to...
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(5 marks) Write a stepwise procedure to make a Ag/AgCl reference electrode. Be as specific as you can to obtain full marks.
You will have access to all equipment available in a standard lab basket and to the following materials:
Dry-erase marker casing
Graphite rod
Masking tape
Ag wire
Hot plate
.
0.5 M KCI(aq) solution
Stir bar
3.0 M KCI(aq) solution
Parafilm (a thick elastic film)
Tryptic soy agar (TSA). Note that the salts
9V battery with alligator clips to connect
found in TSA are NOT sufficient to make an
cathode and anode to electrodes
effective salt bridge.

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