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Results tagged with reduction-potential
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user 17175
For questions about the reduction potential (A measure of the tendency of a chemical species to acquire electrons and thereby be reduced) or its applications. Also see the tag [electrochemistry].
4
votes
Can molten aluminium be used to reduce iron oxide (rust) into iron?
Aluminum can indeed reduce iron oxide, but you may not get iron metal. Aluminum and iron constitute one of many pairs of metals that form intermetallic compounds. Reference [1](https://doi.org/10.1007 …
- 62.5k
1
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Can water oxidize zinc?
I've seen similar demonstrations with magnesium, and in both cases the explanation is the same. The metal reacts to produce the hydroxide plus hydrogen; with zinc this would be
$\ce{Zn + 2 H2O -> Zn( …
- 62.5k
3
votes
Why is the reduction potential of Cu$^{2+}$ less than Cu$^+$?
We should qualify this properly. Water-solvated copper(II) has a lower reduction potential than water-solvated copper(I). As will be mentioned below, copper -- alone among fourth-period transition ele …
- 62.5k
7
votes
Accepted
Why is hypochlorite a stronger oxidizing agent than other oxychlorides?
Besides the the thermodynamic aspects discussed by Matthew, consider the kinetic aspects. Oxidation by a chlorine oxyanion involves displacement of oxygen from its bond with the chlorine. Such a dis …
- 62.5k
1
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Relative stability of $\ce{V^2+}$ and $\ce{V^3+}$ and their Standard Electrode Potential
An independent source gives $-0.37$ for titanium, $-0.26$ for vanadium and $-0.42$ for chromium, showing that vanadium is relatively high compared with its immediate neighbors. The book should have sa …
- 62.5k
2
votes
Accepted
Latimer diagram for a metal in basic solution
Let's look at how you would add in the water and hydroxide ions for the $\ce{MO4^{3-}->MO(OH)}$ reaction.
Step 1: Start with the given metal species, with the metal oxidation states included:
$\ce{ …
- 62.5k
1
vote
Can the 5+ and 4+ oxidation state of Vanadium ion exist independently?
Most likely, vanadium cannot exist as a 4+ or 5+ ion except as part of a covalently bound species such as $\ce{VO^{2+}}$ or $\ce{VO2^+}$. However, its heavier congeners niobium and tantalum form mine …
- 62.5k
0
votes
Silver Tarnish and Reactivity Series
We do indeed have an exothermic reaction between hydrogen sulfide and silver, which goes against the usual EMF series. The EMF series applies specifically to species in water solution, so we should no …
- 62.5k
1
vote
Accepted
what are other metal oxide that can be used as electron acceptors?
A few oxides do beat silver oxide (or at least the silver(I) oxide reported in the question) in terms of reduction potential. Here, examples are given for basic solutions and for acid solutions. Reduc …
- 62.5k