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P-5
REAGENTS AND EQUIPMENT
1 variable resistance box
50 mL buret
source of 12 volts D.C.
a time piece
1 ammeter (0 to 150 mA)
sand paper
insulated wire with nichrome tip
6.0 M HCl
6.0 M H2SO
4
(sulfuric acid)
metal foil Zn and Cu
0.10 M Cu(NO3)2 (copper(II) nitrate)
copper wire
0.10 M Zn(NO3)2 (zinc nitrate)
EXPERIMENTAL PROCEDURE
You should start run 1 of Part I, and then do Part II while you are waiting for this run to finish. After starting
run 2 of Part I, do the calculations for run 1.
Part I. Electrolysis
The experimental setup is shown in Figure 1.
(ANODE
)
H
2
SO
4
(0.2 M
)
Bur
et
40
0
mL
Bea
ker
Y
ELL
OW
RE
D
V
ariable
R
esistanc
e
Box
A
mmeter
P
ower Sour
ce
~
125
mA
R
ed
W
ire
Black W
ire
Cop
per W
ire
Red
W
ir
e
w
ater
column
height
FIGU
RE 1
~135 mA
