.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
.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
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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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?
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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