A student recorded a polarogram of 2.0 mM Cd2+ solution and forget to add KCl solution. What type of error do you expect in his results?
A. Only migration current will be observed
B. Only diffusion current will be observed
C. Both migration current as well as diffusion current will be observed
D. Both catalytic current as well as diffusion current will be observed
Answer: Option D
This Question Belongs to Engineering Chemistry >> Electrochemistry
Related Questions on Electrochemistry
A. $$2.303\frac{{RT}}{F}$$
B. $$ - 2.303\frac{{RT}}{F}$$
C. $$E_{{M^ + }|m}^ \circ + 2.303\frac{{RT}}{F}$$
D. $$E_{{M^ + }|m}^ \circ - 2.303\frac{{RT}}{F}$$
Given that E°(Fe3+, Fe) = -0.4 V and E°(Fe2+, Fe) = -0.44 V, the value of E°(Fe3+, Fe2+) is
A. 0.76V
B. -0.40 V
C. -0.76 V
D. 0.40 V
A. decrease by a factor of 2
B. increase by a factor of 2
C. decrease by a factor of 4
D. increase by a factor of 4
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