Questions tagged [decomposition]
For questions about the decomposition of any chemical species, under any certain conditions.
130 questions
3
votes
1
answer
380
views
How does one decompose hydrogen peroxide in a nitric acid solution so that it can be disposed of with out generating oxygen gas later?
I am removing high phosphorous (5~10%) nickel electroless plating from alumina circuit boards using 125 ml concentrated nitric acid to 250 ml water and 60 ml 35% hydrogen peroxide, generally following ...
- 6,022
1
vote
1
answer
106
views
Decomposition of trialkylammonium nitrite
I came across a reaction involving the decomposition of trialkylammonium nitrite in aqueous solution. Of course, the preparation of the salt is easy, it is just an acid base reaction. Here's the ...
- 140
5
votes
3
answers
846
views
Which one is the correct chemical reaction of heating of anhydrous copper sulfate?
This is the unbalanced equation of decomposition of anhydrous copper sulphate in my textbook:
$$\ce{CuSO4 -> CuO + SO2 + SO3 + O2}$$
It is balanced as:
$$\ce{4CuSO4 -> 4CuO + 2SO2 + 2SO3 + O2}$$
...
- 193
0
votes
1
answer
162
views
Zero and First Order Kinetics Characteristics in Photodegradation Experiment
In my work, I look at the photodegradation of an organic compound under environmental conditions. I am interested in the degradation kinetics. Typically, for photodegradation and environmental systems,...
- 9
0
votes
0
answers
96
views
Kinetics of the thiosulfate and hydrochloric acid reaction
As an exercise in chemistry, I decided to observe the kinetics of the decay of thiosulfate ions in an acidic medium. As far as I am aware, it is a very well known exercise among chemists.
I found a ...
- 358
0
votes
1
answer
108
views
Does releasing carbon dioxide always make the leftovers more alkaline?
In a few examples I noticed that when a reaction gives off carbon dioxide gas, it's likely that the result left over will be more alkaline.
Heating up dry sodium bicarbonate I believe does $\ce{2 ...
- 3
3
votes
1
answer
166
views
Does Decomposing Iodoform Really Give Elemental Carbon?
I was reading my school textbook and under the section Iodoform it said:
On heating, iodoform decomposes to give iodine vapor. Presence of air, moisture and light also cause the decomposition of ...
- 381
1
vote
0
answers
108
views
Why don't we consider polarising power in lattice energies?
In my chemistry course, we define lattice energy as follows:
Energy released when 1 mol ionic compound is formed from its gaseous ions at standard conditions.
And following this definition, we are ...
0
votes
0
answers
56
views
In a vacuum, what gas(es) emanate from ilmenite when heated degree by degree to very high temperatures (complete sublimation)?
In a vacuum, ilmenite $\ce{FeTiO3},$ like all matter, sublimates to gas(es) if heated to a high enough temperature. If our (already purified) ilmenite sample (at $\pu{0 Pa}$ pressure and no reactants ...
- 19
3
votes
1
answer
140
views
Oxide with a low decomposition temperature
For nosecone separation on a rocket we plan on using black powder charges. However, these charges are unreliable in the low oxygen environments present at high altitudes.
Despite promising results in ...
- 39
1
vote
0
answers
37
views
How much oxalic acid is carried with the product gases during its thermal decomposition at 230°C?
I’d like to measure the amount of oxalic acid carried with the product gases during its thermal decomposition at 230°C. It takes 120 seconds to decompose 2.5 g in an electrically heated crucible (PID)....
3
votes
0
answers
76
views
Is brown-colored serotonin suitable as analytical standard?
We received serotonin, analytical standard, CAS 50-67-9 14927-25MG from Sigma with the expiration date 2027-02-28 and the quality release date 2024-03-12.
However, the substance appears dark-brown in ...
- 39k
-4
votes
1
answer
136
views
Decomposition Redox Rxn Vs. Intramolecular Redox Rxn [closed]
I'm trying to understand what is the difference between decomposition redox reaction and intramolecular redox reaction? Are they synonymous? Is there a reaction which belongs to one but not the other ...
0
votes
1
answer
125
views
Does a decomposition redox reaction with a single reactant and non-elemental products exist? [closed]
Does a decomposition redox reaction exist with a single reactant and non-elemental products and that this decomposition reaction cannot be decomposed in any condition to yield elemental products.
For ...
- 31
0
votes
0
answers
81
views
Lack of control group in experiment?
I'm doing an experiment for Year 11 Biology to model how increasing the surface area of a potato affects the height of bubbles produced during a chemical reaction. It's supposed to show the ...
