Help with combustion?

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Help with combustion?

Chemistry
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Has anyone done the combustion assignment for chemistry on flvs?
For example I have to find out the reaction type of Fe2O3 + CuSO4, and I said combustion/synthesis.
A combustion is as follow \[C_xH_y + O_2 -> CO_2+H_2O\]

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Other answers:

Your reaction type would be a double replacement
Here I'll make you a simple summary of the reactions
CO2 + H2O is only if it's a hydrocarbon combusting, no?
\[AB -> A+B ~~~(decomposition)\] \[A+B -> AB ~~~~(composition/ synthesis)\] \[AB+C -> AC+B ~~~ \text{(singe replacement, depends upon metal and nonmetal)}\] \[AB+CD -> AD+CB ~~~~(double~replacement)\] and you have the combustion reaction above
Oh alright. So I'd be right in saying that Pb(NO3)2+ KI is combustion/single replacement?
Note, for double replacement, A and C are metals B and D are non metals
Those are not combustions
A single replacement sounds good though
How do I tell if it's a combustion or not if oxygen is present?
Well I haven't taken too much chemistry but a combustion is in the form of \[C_xH_y + O_2 -> CO_2+H_2O\]
That's only hydrocarbon combustions. inorganic molecules combust as well.
This is the general form of a combustion reaction, what you're thinking of is, that in general anything with oxygen can be considered combustion.
That's why there is a general form of the equation to avoid confusion
So the general form of combustion only includes carbon+hydrogen and oxygen?
Yes, generally we say combustion is the reaction of oxygen with an compound of carbon and hydrogen
What about inorganic combustions?
Well let me tag someone else who's better at chemistry that may be able to explain this @empty
Alright. Thank you for your help! I appreciate it.
Np @nincompoop maybe able to help you as well
What do you think nincompoop?
Fe2O3 + CuSO4 do you want to figure what kind of reaction will take place?
Yes. Also, what determines if it will be a combustion if not just having oxygen present?
So the undermentioned reaction is combustion?
Is there a rule of exception?
*aforementioned
correct
As well as double replacement?
Definitely a double replacement
Fe2O3 + CuSO4 ye double replacement
Ok, one more for practice.
http://chemwiki.ucdavis.edu/Analytical_Chemistry/Chemical_Reactions/Chemical_Reactions
Mg+Hcl would be single replacement, but not combustion because there's no oxygen?
correct
HCl*
but you have to take note that Oxygen is abundant in the atmosphere and it is difficult to do these experiments in an environment where there is no oxygen the rule of thumb is that whenever there is an addition of oxygen, that is a combustion reaction
but in the cases of your problem, it is more important to know single replacement, double replacement, redox reaction (a type of combustion and can have no oxygen in the equation), decomposition and synthesis. later on in your chemistry experiences, these names do not matter much because you will be focusing on movement of electrons for the most case.
use the formula that astro provided you and usually you can pretty much tell or make a good guess with the number of substances present in the reaction
\[Fe_2O_3+3CuSO_4 ->Fe_2(SO_2)_3+3CuO\]
there is nothing more to it, and you will be focusing more on balancing equations and calculating enthalpy, spontaneity, gibbs free and other exciting things about chemistry
Mhm
Is that still considered a combustion
the SO will be treated as on compound \(\sf (SO_4) \)
oh oops that should be SO_4 but yeah
Noted 'poop. Does SO_4 being treated that way change whether it's a combustion or not?
which should have been covered in other lessons like lewis structures, ground charge and formal charges.
nah it is minute and shouldn't be the focus of concern
oxygen makes everything combustible and very reactive, let us just put it that way
OK. I think I got it. You've all been tremendous help. I really appreciate it. Just curious though, what do you guys do for a job (school maybe)?
Professional amphibian lawyer/politician.
Well see you later 'gater.
woodward gives a good way to capture these concepts do not shy away from asking him LAUGHING OUT LOUD
OK. Is there anything that you think I don't understand or that wasn't covered thoroughly enough you feel, woodward?
Actually this is unbalanced: \[C_xH_y + O_2 -> CO_2+H_2O\] Nope, nothing really to add really, only because chemistry has too much to say about everything lol
:) I was hoping someone will see that
hahaha
It's just a template/equation reason why it's CxHy
medal + fan if you can balance it before me. :)
Oh, beat me to it! How do I reward everyone for the help?
do it
The balance? Well, assuming C_1H_1, then...
You click "best response" which gives the user a medal, unfortunately you can only pick 1.
Try CH4 methane
Alright
I think this is it: \[4C_xH_y + O_2 \rightarrow 4x CO_2+2yH_2O\]
CxHy+O2−>CO2+H2O CH4+4O2 -> CO2 +2H2O I guess
Wait
2O2*
When you're balancing a combustion like that, do it in this order, CHO
Yeah my answer is clearly wrong, there's no coefficient on \(O_2\)!
Well thanks guys! I've chosen Astro as best response because of consistent attendance and great help.
Let me correct your eqatuon Professor
For CH4 and we can conclude then :-)
\[CH_4 + 2O_2 -> CO_2+2H_2O\]
I corrected it to that I think :)
Ok great!
Sorry I didn't see that post haha, well done!
Alright I'll be off then! Thanks guys!
Np, take care!

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