In which of the following pairs of metals forming electrochemical cells will the anode undergo the fastest corrosion? choices: Iron-Cadmium Sodium-Copper Chromium-Cobalt   Manganese-Lead

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Chapter1: Chemical Foundations
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In which of the following pairs of metals forming electrochemical cells will the anode undergo the fastest corrosion?

choices:

Iron-Cadmium

Sodium-Copper

Chromium-Cobalt
 
Manganese-Lead




EMF series
Vo
metal
metal
Au
Cu
+1.420 V
+0.340
- 0.126
- 0.136
Pb
Sn
Ni
- 0.250
Co
- 0.277
Cd
- 0.403
Fe
- 0.440
Cr
- 0.744
Zn
- 0.763
Al
- 1.662
Mg
- 2.363
Na
- 2.714
K
- 2.924
Transcribed Image Text:EMF series Vo metal metal Au Cu +1.420 V +0.340 - 0.126 - 0.136 Pb Sn Ni - 0.250 Co - 0.277 Cd - 0.403 Fe - 0.440 Cr - 0.744 Zn - 0.763 Al - 1.662 Mg - 2.363 Na - 2.714 K - 2.924
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