6
votes
Accepted
Oxidation states of Thiosulphate
If the last paragraph in your quotation is meant to be the book's answer, I would stain that text with my intensely colored, anthocyanin-rich cranberry jam*. I would find either $-1$ and $+5$ or $0$ ...
- 61.2k
4
votes
Accepted
What is the oxidation state of atoms in interstitial transition compounds?
In the case of titanium carbide $\ce{TiC}$, there is a slight reaction with water to form methane, consistent with an oxidation state assignment $\ce{Ti^{IV}C^{-IV}}$, and even Group 5 carbides with ...
- 61.2k
3
votes
Accepted
Stability of H3MnO4, H2MnO4, HMnO4
One difference between manganese(V) and phosphorus(V) is the former can undergo disproportionation with higher manganese oxidation states available.
Not only $\ce{Mn^VO4^{3-}}$ but also $\ce{Mn^{VI}O4^...
- 61.2k
3
votes
Accepted
Why does balancing the reduction of dichromate(VI) to chromium(III) require four water molecules among the products?
$$\ce{Cr2O7^2–(aq) + 3 HNO2(aq) + 5 H+(aq) -> 2 Cr^3+(aq) + 3 NO3–(aq) + 4 H2O} $$
The left side has $1\cdot7 + 3\cdot2 = 13$ oxygen atoms and $3\cdot1 + 5\cdot1 = 8$ hydrogen atoms. The right side ...
- 41.5k
3
votes
How do you determine the oxidation states of elements in KSCN (potassium thiocyanate)?
The best way to calculate the oxidation states is to draw the geometry of the substance as correctly as possible, with visible covalences, and then to transform all covalent bonds into ionic bonds, ...
- 29.5k
2
votes
Accepted
What is reduced in the reaction of magnesium with oxygen?
In the reaction of magnesium with oxygen $\ce{O2}$, the oxygen atom is reduced from $0$ to $-2$. This cannot be said of the molecule $\ce{O2}$. The oxidation number is a number attached to an atom, ...
- 29.5k
2
votes
Accepted
Why does balancing the oxidation of dichromate(VI) to chromium(III) require six iron atoms?
I would like to go back to your original demand.
On the first line, there was a title : "The problem". The second line is : "Balance the chemical equation using oxidation numbers". ...
- 29.5k
2
votes
Stability of H3MnO4, H2MnO4, HMnO4
Manganese doesn't like to be in +5 and +6 O.S. and the acid form of hypomanganate and manganate anion cannot exist due to rapid disproportionation. So, they exist as salts of alkali metals. Manganese ...
- 26.5k
1
vote
Find cell configuration notation for permanganate in acidic medium
Because I heard people saying that since the anode already has a solid substance (solid iodine) it's not necessary to add platinum to the anode. I digress because I think platinum is necessary for the ...
- 3,704
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