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
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
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 24E: For each reaction listed, determine its standard cell potential at 25 C and whether the reaction is...
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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. What is the mineral formed when Cu corrodes to form a green coating on the surface?
3. What is the mineral formed when Cu corrodes to form a green coating on the surface?
a.Cu(NO3)2
b.CuCO3
c.Cu2O
d.Cu(OH)2
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