This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: In order to determine the identity of a particular lanthanide metal (M), a voltaic cell is ... (Read 52 times)

elizabeth18

  • Hero Member
  • *****
  • Posts: 559
on: Mar 21, 2021

Question 1

If an electrolysis plant operates its electrolytic cells at a total current of 1.2 × 106 amp, how long will it take to produce one metric ton (one million grams) of Mg(s) from seawater containing Mg2+? (1 faraday = 96,485 coulombs)

◦ 1.8 h
◦ 1.8 days
◦ 55 min
◦ 0.92 h
◦ 0.46 year

Question 2

In order to determine the identity of a particular lanthanide metal (M), a voltaic cell is constructed at 25°C with the anode consisting of the lanthanide metal as the electrode immersed in a solution of 0.0594 M MCl3, and the cathode consisting of a copper electrode immersed in a 1.00 M Cu(NO3)2 solution. The two half-reactions are as follows:
M(s) → M3+(aq) + 3e–
Cu2+(aq) + 2e–→ Cu(s)
The potential measured across the cell is 2.64 V. What is the identity of the metal?
Reduction Half-Reaction
E° (V)
Cu2+(aq) + 2e–→ Cu(s)
0.34
Ce3+(aq) + 3e–→ Ce(s)
–2.336
Dy3+(aq) + 3e–→ Dy(s)
–2.295
Eu3+(aq) + 3e–→ Eu(s)
–1.991
Gd3+(aq) + 3e–→ Gd(s)
–2.279
Sm3+(aq) + 3e–→ Sm(s)
–2.304
 


◦ Ce
◦ Eu
◦ Dy
◦ Gd
◦ Sm
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by elizabeth18 on Mar 21, 2021

Shshxj

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 56% of students answer this correctly


elizabeth18

  • Member
  • Posts: 559
Reply 2 on: Mar 21, 2021
Excellent

apple

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Examples of different cell types in humans Examples of different cell types in humans
Examples of cell types derived from ectoderm, mesoderm, and endoderm. Examples of cell types derived from ectoderm, mesoderm, and endoderm.
Surface molecules involved in the interaction between an antigen-presenting cell and a CD4+ T cell. Surface molecules involved in the interaction between an antigen-presenting cell and a CD4+ T cell.
Use a compound angle addition formula to determine an equivalent trig expression for cos(x + ... Use a compound angle addition formula to determine an equivalent trig expression for cos(x + ...
RFLP diagnosis of sickle-cell anemia RFLP diagnosis of sickle-cell anemia
Analysis of double-mutant phenotypes to find order of genes in developmental pathways Analysis of double-mutant phenotypes to find order of genes in developmental pathways
Video: Arthroscopy

For a complete list of videos, visit our video library