1. What is the mineral formed when Cu corrodes to form a green coating on the surface?a.Cu(NO3)2b.CuCO3c.Cu2Od.Cu(OH)22.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)3. 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°Cb.lower than 25°Cc.half of 25°Cd.still 25°C

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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. 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

2.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)||Cr₂O₇^2-(aq), Cr³⁺(aq)|Pt(s)

3. 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

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