Chemistry Reference
In-Depth Information
-2.0
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
-2.5
3
y
= 0.5303x - 3.9428
R
2
= 0.9977
-3.0
2
y
= 0.5021x - 4.3735
R
2
= 0.9923
1
-3.5
y
= 0.4885x - 4.5799
R
2
= 0.992
-4.0
-4.5
6.3
Logarithmic plot of the relationship between rotation rate of the
electrode and limiting current for the first wave of the oxidation of
sodium dithionite in alkaline solution at a platinum-disc electrode
as a function of sodium dithionite concentration: (1) 2.9
¥
10
-
3
, (2)
5.8
¥
10
-
3
and (3) 1.2
¥
10
-
2
mol l
-
1
.
Log
w
(s
-1
)
-2.0
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
-2.5
3
-3.0
2
-3.5
1
-4.0
-4.5
6.4
Logarithmic plot of the relationship between rotation rate of the
electrode and limiting current for the second wave of the
oxidation of sodium dithionite in alkaline solution at a platinum-
disc electrode as a function of sodium dithionite concentration: (1)
5.8
¥
10
-
4
, (2) 2.9
¥
10
-
3
and (3) 1.2
¥
10
-
2
mol l
-
1
. Slopes at slow
rotation rates are (1) 0.50, (2) 0.48 and (3) 0.41.
