A group of students were tasked to perform the metal coupling of iron nail similar to Experiment 3: Corrosion of Metals. They were given two metals, metal Q and metal J, to couple to iron nail. They prepared an agar medium with K3Fe(CN)6 and phenolphthalein. Their professor informed them that metal Q forms an orange color while metal J forms maroon color when oxidized. Their professors also gave them the reduction half-reactions for the corresponding metal ions including the reduction of Fe2+. J2+ + 2e- → J Eo = - 1.66 v Fe2+ + 2e- → Fe Eo = - 0.44 v Q2+ + 2e- → Q Eo = - 0.25 v O2 + 2H2O + 4e- → 4OH- Eo = + 0.40 v
A group of students were tasked to perform the metal coupling of iron nail similar to Experiment 3: Corrosion of Metals. They were given two metals, metal Q and metal J, to couple to iron nail. They prepared an agar medium with K3Fe(CN)6 and phenolphthalein. Their professor informed them that metal Q forms an orange color while metal J forms maroon color when oxidized. Their professors also gave them the reduction half-reactions for the corresponding metal ions including the reduction of Fe2+. J2+ + 2e- → J Eo = - 1.66 v Fe2+ + 2e- → Fe Eo = - 0.44 v Q2+ + 2e- → Q Eo = - 0.25 v O2 + 2H2O + 4e- → 4OH- Eo = + 0.40 v
Chapter18: Introduction To Electrochemistry
Section: Chapter Questions
Problem 18.8QAP
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A group of students were tasked to perform the metal coupling of iron nail similar to Experiment 3: Corrosion of Metals. They were given two metals, metal Q and metal J, to couple to iron nail. They prepared an agar medium with K3Fe(CN)6 and phenolphthalein. Their professor informed them that metal Q forms an orange color while metal J forms maroon color when oxidized. Their professors also gave them the reduction half-reactions for the corresponding metal ions including the reduction of Fe2+.
J2+ + 2e- → J Eo = - 1.66 v
Fe2+ + 2e- → Fe Eo = - 0.44 v
Q2+ + 2e- → Q Eo = - 0.25 v
O2 + 2H2O + 4e- → 4OH- Eo = + 0.40 v
Transcribed Image Text:Which is the reduction process that occurred for Fe nail coupled with metal Q?
A
j2+ + 2e-→J
B
Fe2+ + 2e - → Fe
0,+2H,0+4e-→40H -
D
Q2+ + 2e - → Q
Transcribed Image Text:Which is the oxidation process that occurred for Fe nail coupled with metal Q?
A
Fe → Fe2+ + 2e -
B
40H-→0,+2H¸0+4e¯
J→J2+ + 2e-
Q →Q²+ + 2e -
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