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Chapter 10: Electrochemistry

Re: Chapter 10: Electrochemistry

Postby HARPREETKAURSIDHU » Tue Oct 25, 2022 1:14 pm

I am having trouble with the following questions

Q 16- According to the table 1, which of the following species is the strongest reducing agent?
Fe 3+, Fe 2+. Zn 2+, and Zn (s).

In the solution it says most negative Eo value is the strongest reducing agent
however, the answer is
Zn (s) ↔ Zn2+ + 2e-

Eo = +0.76 V
Zn is the strongest reducing agent however, its value is positive.

Q 17- Only considering the standard half-cell reactions of the species listed in table 1, how many different voltaic cells within a voltage greater than 2 V can be made?
HARPREETKAURSIDHU
 
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Re: Chapter 10: Electrochemistry

Postby goldstanda3269 » Wed Oct 26, 2022 2:23 am

HARPREETKAURSIDHU wrote:I am having trouble with the following questions

Q 16- According to the table 1, which of the following species is the strongest reducing agent?
Fe 3+, Fe 2+. Zn 2+, and Zn (s).

In the solution it says most negative Eo value is the strongest reducing agent
however, the answer is
Zn (s) ↔ Zn2+ + 2e-

Eo = +0.76 V
Zn is the strongest reducing agent however, its value is positive.


I understand why it seemed confusing. The answer is indeed correct but the worked solution is not focused enough on the reasoning. Please check the solution in 24 hours and if anything is unclear, please post here. {GAMSAT does not focus on memorization, so we are removing the part in the solution mentioning the negative Eo which, btw, refers to how it is written in a reduction potential table, not how it was written at the end of the solution.}


HARPREETKAURSIDHU wrote:Q 17- Only considering the standard half-cell reactions of the species listed in table 1, how many different voltaic cells within a voltage greater than 2 V can be made?


It is difficult to give a specific answer to a general question.

To help us provide a clear answer: What part of the worked solution contained information that was not clear?

Thanks for your patience.
goldstanda3269
 
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