.Which of the following is an electrolytic cell? a.Pb(s)|Pb2+(aq)||Zn2+(aq)|Zn(s) b.Pt(s)|Fe2+(aq), Fe3+(aq)||MnO4-(aq), Mn2+(aq)|Pt(s) c.Co(s)|Co2+(aq)||Cu2+(aq)|Cu(s) d.Ni(s)|Ni2+(aq)||Cr2O72-(aq), Cr3+(aq)|Pt(s) 2. The dissolution of NH4Cl in water is an endothermic process. If the initial temperature of water is 25°C, what is the expected final temperature of the aqueous system? a.higher than 25°C b.lower than 25°C c.half of 25°C d.still 25°C   3.If your base metal is Cr, which among the following metals can acts as a sacrificial anode for it? a.Cu b.Mg c.Ag d. Ni

Fundamentals Of Analytical Chemistry
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Author:Skoog
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Chapter18: Introduction To Electrochemistry
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Problem 18.18QAP
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1.Which of the following is an electrolytic cell?

a.Pb(s)|Pb2+(aq)||Zn2+(aq)|Zn(s)
b.Pt(s)|Fe2+(aq), Fe3+(aq)||MnO4-(aq), Mn2+(aq)|Pt(s)
c.Co(s)|Co2+(aq)||Cu2+(aq)|Cu(s)
d.Ni(s)|Ni2+(aq)||Cr2O72-(aq), Cr3+(aq)|Pt(s)

2. The dissolution of NH4Cl in water is an endothermic process. If the initial temperature of water is 25°C, what is the expected final temperature of the aqueous system?
a.higher than 25°C
b.lower than 25°C
c.half of 25°C
d.still 25°C
 
3.If your base metal is Cr, which among the following metals can acts as a sacrificial anode for it?

a.Cu
b.Mg
c.Ag
d. Ni

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