Questions tagged [carbon-family]
For questions about the carbon family (group 14) elements, their compounds, and their trends in various physical and chemical properties. For questions specifically about carbon or its allotropes only, prefer using tag [carbon-allotropes] instead.
32
questions
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1answer
71 views
Reaction of Silicon Dioxide with Hydrofluoric Acid [duplicate]
I learnt that $\ce{SiO2}$(Silicon dioxide) doesn't react with any acid except $\ce{HF}$. So what is special about $\ce{HF}$?
Why does only $\ce{HF}$ reacts with $\ce{SiO2}$ even though $\ce{HF}$ has a ...
1
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0answers
61 views
Why isn't carbon-14 included in CIAAW list of isotopic abundances? [closed]
According to Wikipedia, standard atomic weight is based on the published isotopic abundances of CIAAW:
The standard atomic weight $(A_\mathrm{r},$ standard) of a chemical element is the weighted ...
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0answers
41 views
Why does CCl4 not undergo hydrolysis while other chlorine-derivatives of methane do?
In one of my textbooks, I came across a question as to why does $\ce{CCl4}$ not undergo hydrolysis. The answer given went along the lines of carbon lacking a vacant d-orbital to accept the lone pair ...
1
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1answer
197 views
Stability of CI4 and PbI4
I have read in my textbook that $\ce{CI4}$ is more stable than $\ce{PbI4}$ due to inert pair effect. But shouldn't we also consider the effect of steric repulsions? In $\ce{CI4}$, four large iodine ...
2
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2answers
54 views
What exactly makes a carbon atom “α” in a protein residue?
I'm a computer scientist and have no biochemical background, but was working on a project recently that had me going through a lot of protein residues for one reason or other. Feel free to correct me ...
2
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3answers
53 views
Trying to understand the chemistry in an iron carbon battery
I am trying to understand the chemistry that occurs in an iron carbon battery during charging.
The negative electrode is iron, the positive electrode is carbon. The electrolyte is iron(II) chloride. ...
5
votes
3answers
468 views
Net production of CO2 in plants
I am trying to understand in a qualitative way photosynthesis. I am not a chemist so please have some patience.
I read on the Wikipedia page for photosynthesis that the way plants use $\ce{CO2}$ is ...
0
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0answers
26 views
Can other group IV elements form graphene analogs with interesting properties? [duplicate]
Graphene has gathered quite a bit of press due to its unique physical properties which hold enormous promise in a wide range of applications from semiconductors to high strength materials. Given that ...
4
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2answers
50 views
Can Silicon be used as anode for Li-Ion batteries
Can Si be used as anode. I assume you could store much more energy in Si since the atom is much larger than C, but then Si seems not to like to bond with itself. Can there be a solution?
1
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1answer
87 views
Why doesn't H₄CO₄ exist as a stable compound? [closed]
Why doesn't $\ce{H4CO4}$ exist as a relatively stable compound? Its heavier homologue $\ce{H4SiO4}$ seems to exist although it is unstable to some extent but new methods have been able to stabilise ...
1
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2answers
403 views
Does H3CO3+ ion exist and what is its structure? [closed]
Why doesn't $\ce{H3CO3+}$ ion exist and why doesn't the carbonyl group in carbonic acid $(\ce{H2CO3})$ seem reactive?
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1answer
81 views
Best method to increase the chain length of allyl to butane-1,2-diol [closed]
Best method to increase the carbon chain length of allyl. and also add 2 OH carbon after reducing double bond give (S)-4-R-butane-1,2-diol and (R)-4-R-butane-1,2-diol .
R= Any Ak, Cb, Cy, Hy
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1answer
32 views
Is it possible to convert carbon soot/ black carbon in mg to CO2-equivalent? If so, how?
Since global warming is expressed in terms of carbon emissions or CO2 equivalent, can the short lived carbon soot/ black carbon that is produced from incomplete combustion be expressed in terms of CO2 ...
7
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1answer
122 views
Are all stable Xenes (graphene-like 2D honeycomb sheets) buckled?
background: Per this abstract
Silicene, germanene and stanene are part of a monoelemental class of two-dimensional (2D) crystals termed 2D-Xenes (X = Si, Ge, Sn and so on) which, together with ...
3
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0answers
151 views
Electrical and thermal conductivity of graphite
I was reading about carbon family where it was mentioned that electrical conductivity of graphite increases with temperature while thermal conductivity decreases.
However, I could not find a suitable ...
0
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1answer
202 views
Why does bubbling carbon dioxide through calcium hydroxide result in a precipitate?
Why does the addition of carbon dioxide to calcium hydroxide create the precipitate calcium carbonate? What happens chemically for such a molecule to form? How exactly do their interactions come into ...
4
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0answers
29 views
Has there been any independent verification of the results from this Chinese nanotube study?
Watts up referred to the South China Morning Post in reporting that a Tsinghua University team led by Wei Fei claimed in 2018 to have manufactured carbon nanotube fibre has tensile strength of 80 ...
1
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1answer
53 views
What molecules are produced in carbon arc lamp and how do they produce light?
I am curious about the chemistry of the arc lamp (an indirectly for the incandescent bulbs) thus I would like to ask the following.
It is a common understanding that the electrons pushed inside an ...
-1
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1answer
352 views
Which is more metallic: boron or silicon?
I read somewhere that boron is more metallic. Is it correct? If so, can you please elaborate?
The reason why I'm confused is because 2 factors come into play here:
When you move towards right, ...
0
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1answer
42 views
Simple tests for presence of CO₂
Am aware that one method for testing for the presence of $\ce{CO2}$ is passing the gas through limewater, with it going cloudy if positive.
Are there any other convenient methods?
2
votes
1answer
307 views
Do all polymers contain either carbon or silicon?
Is either carbon or silicon present in every known polymer?
If not, is there a small group of elements that, between them, are present in every known polymer, or can polymers be based on a lot of ...
1
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0answers
45 views
Raman Spectrum of Graphene
I recently took a raman spectrum for a sample of graphene-pla. The result had the characteristic G and D bands associated with Graphene, but not the 2D. But there is a broad peak at around 3100, which ...
0
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1answer
32 views
What does 'a' stand for in 'a-C' according to research paper lingo?
I came across this paper but I cannot figure out what is a-C as it is not defined. The C here is obviously Carbon. Regarding 'a' prefix My best guess is that it stands for amorphous. Is this correct?
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1answer
41 views
Carbon emission in absence of oxygen [closed]
When wood is pyrolysed in absence of air is $\ce{CO2}$ emitted.
If yes why is it not combustible?
2
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0answers
10 views
Reactants in high temperature chemical vapour deposition
I'm setting up a high-temperature electrolysis rig for the purpose of chemical vapour distribution.
The molten carbonate (750 degrees Celsius) will be lithium carbonate. The cathode will be ...
-1
votes
1answer
464 views
Carbon chains isomers, why is 1-methyl-hexane not a thing? [duplicate]
As title reads, why shouldn't 1-methyl-hexane work but 2-methyl-hexane and 3-methyl-hexane does?
2
votes
1answer
134 views
how to manufacture PTC ink
I am trying to create a PTC ink similar to Henkel ECI8120 , I researched PTC rubber and found that it was Polydimethylsiloxane (PDMS) loaded carbon nanoparticles, I was wondering if anyone here has ...
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1answer
75 views
Help with Carbon Fibre
I'm having trouble finding articles about carbon fibre that don't contradict other articles. I just have a few questions about the atomic structure and the intermolecular and intramolecular forces.
...
11
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0answers
154 views
Does this binary compound of C and N - isoelectronic with carbon suboxide - exist?
I am a mathematician not a chemist, so my questions are naive and rather combinatorial. I am intrigued by the possibility of the following compound:
$$\ce{N- = N+ = C = N+ = N-}$$
which ought to ...
3
votes
1answer
153 views
I have an idea through utilizing soda lime or other basic substances to help solve climate change
I have an idea through utilizing soda lime or other basic substances to help solve climate change. I want to see if there are some possible errors or other negative implication that I am disregarding.
...
12
votes
2answers
11k views
Why CCl4 does not dissolve in water while SiCl4 does?
Why $\ce{CCl4}$ does not dissolve in water while $\ce{SiCl4}$ does?
Does it have to do with d-orbitals? If yes, then how are they related?
1
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2answers
1k views
Why does dimethyl dichlorosilane undergo hydrolysis to form siloxane polymers, but its carbon analog does not?
Dimethyl dichlorosilane will undergo hydrolysis to form siloxane polymers. But why would its carbon analog dimethyl dichlorocarbon not be able to undergo a similar hydrolysis reaction to form polymers?...
