All Questions
Tagged with reactivity inorganic-chemistry
55
questions
2
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2
answers
85
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White powder-like substance on top of sodium hydroxide solution
i've made sodium hydroxide solution adding 100g of hydroxide to water 100g. i've been adding it slowly and constantly stirring. few days later on top of solution was thick layer of white powder. it ...
-2
votes
1
answer
46
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Why mono and dioxides of germanium,tin and lead are amphoteric
I get that group 14 elements show +4 and +2 oxidation states so they can form both ionic and covalent compounds and so they are amphoteric but monoxide means that these elements have to show +2 ...
4
votes
3
answers
1k
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Does manganese reacts with water at "not" standard conditions?
In my answer, I stated that manganese is said to not react with water under normal conditions although some sources say it reacts with water to liberate hydrogen gas. Does it implies that it reacts ...
3
votes
0
answers
99
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Does solid manganese reacts with atmospheric air when heated?
As discussed in my answer, manganese is not particularly reactive to air. The surface of manganese lumps oxidize to a minor extent but when it is finely divided, it becomes pyrophoric and burns in air....
2
votes
0
answers
189
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Why doesn't XeF6 displace oxygen from water?
Consider the following reactions (unbalanced):
$$
\begin{align}
\ce{XeF2 + H2O &→ Xe + HF + O2} \tag{a} \\
\ce{XeF4 + H2O &→ XeO3 + Xe + O2 + HF} \tag{b} \\
\ce{XeF6 + H2O &→ XeO3 + HF} \...
11
votes
1
answer
465
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Why does radium form a nitride rather than oxide when exposed to air?
The Wikipedia article states:
Pure radium is silvery-white, but it readily reacts with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of radium nitride ($\ce{Ra3N2}$)....
2
votes
1
answer
224
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Why is it technically inaccurate to say that the decrease in reactivity of halogens is due to decreasing electronegativity?
I came across the following information in this post.
Below the infographic there is a paragraph with a disclaimer:
As another disclaimer, the reactivity of the halogens decreasing down the group ...
4
votes
0
answers
780
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Reactivity order among Interhalogens
I was reading about Interhalogens in JD Lee and in the book it is stated that (without any reasoning) the reactivity order for few of the interhalogens is :-
$\ce{ClF_3 > BrF_5 > IF_7 > ClF &...
5
votes
1
answer
2k
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p-Nitroaniline reaction with sulfuric acid
An alternative version of the well-known demonstration carbon snake (the dehydration reaction of sugar by concentrated sulfuric acid forming a column of graphite) consists in mixing paranitroaniline ...
-1
votes
2
answers
222
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Can a weak acid react to give a stronger acid? [closed]
I was trying to understand why $\ce{AgCl}$ does not dissolve in $\ce{HNO3}$ and the reaction I could think of was something like this:
$$\ce{AgCl + HNO3->AgNO3 + HCl}$$
I could not understand why ...
0
votes
0
answers
709
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What is the product of ammonia reacting with silicone?
I used a soft silicone hose to carry ammonia at ~70 °C. I was surprised to later find the hose had hardened.
A quick materials compatibility search for silicone had given me a lot of info but an "...
11
votes
2
answers
307
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Silver Tarnish and Reactivity Series
I read that silver in the presence of hydrogen sulfide corrodes to form silver sulfide and hydrogen.
$$\ce{Ag + H2S -> Ag2S + H2}$$
But in the reactivity series silver is placed much below hydrogen....
-3
votes
1
answer
104
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Wiki’s explanation of the rate of chemical reaction [closed]
Could you please help me understand the Wiki’s explanation of the rate of chemical reaction?
It says: the rate of the chemical reaction is directly proportional to the product of the activities or ...
1
vote
1
answer
2k
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Reaction of Silicon Dioxide with Hydrofluoric Acid [duplicate]
I learnt that $\ce{SiO2}$(Silicon dioxide) doesn't react with any acid except $\ce{HF}$. So what is special about $\ce{HF}$?
Why does only $\ce{HF}$ reacts with $\ce{SiO2}$ even though $\ce{HF}$ has a ...
-2
votes
1
answer
79
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Can ZrO2 be made fluoride resistant?
$\ce{ZrO2}$ has great properties, biocompatibility, chemical resistance, decent scratch resistance, great thermal resistance and refraction, but it could be better. It, like glass, will slowly react ...
3
votes
1
answer
2k
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Is silicon dioxide decomposition possible?
I was thinking about this, I made Gibbs free energy calculations and I can't figure out if
$$\ce{SiO2(s) -> Si(s) + O2(g)}$$
is actually possible, even at a ridiculous high temperature.
1
vote
0
answers
35
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Is there any elemental molecule which does not react well with anything but oxygen? [closed]
For example, phosphor reacts with oxygen but it also easily reacts with many halogens, metals, etc.
Is there any elemental molecule that doesn't react well with almost anything but oxygen?
-2
votes
1
answer
182
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Can iodine replace other halogen as well?
While reading about halogen family I encountered the reaction:
$$\ce{NaClO3 + I2 -> NaIO3 + Cl2}$$
I know that that the oxidizing tendency of halogens decreases down the group, so I think that the ...
4
votes
2
answers
390
views
When aluminium is ignited in atmosphere, will it form only aluminium oxide or also aluminium nitride?
We know when lithium is burnt in air, it forms lithium nitride and lithium oxide. I am wondering if this applies to aluminium (other metals) also?
13
votes
1
answer
672
views
What are the properties of COₓ where x ≥ 3?
$\ce{CO_x}$ are part of the oxocarbon molecule class. Commonly known are $\ce{CO}$ and $\ce{CO2}.$ However, there are molecules in which $x$ is equal to or larger than $3.$ Those molecules are barely ...
4
votes
3
answers
698
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Why cobalt reacts favorably with nitrogen?
I used also iron, nickel, zinc, copper. However, cobalt gives the easiest and straight forward yield of nitrides (XPS and SAED verified).
It is so easy to get cobalt nitride that I don't even have to ...
3
votes
2
answers
4k
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Why do bubbles form when a reactive metal is placed in a less reactive metal's salt solution?
What is the gas that if formed when a reactive metal is placed in a salt solution of a less reactive metal? Theoretically, it should just be a simple displacement.
I know that this question has been ...
4
votes
1
answer
4k
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Reaction of aqueous sodium carbonate with aluminum foil
Aqueous sodium hydroxide is known to react with aluminum foil in an exothermic, hydrogen-gas releasing reaction like $$\ce{2NaOH(aq) + 2Al(s) + 2H2O(\ell) → 2NaAlO2(aq) + 3H2(g)}$$
However, on ...
0
votes
1
answer
70
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Does bicarbonation require water?
In an aqueous solution of $\ce{NaOH}$ exposed to the atmosphere one can probably expect some degree of $$\ce{NaOH(aq) + CO2(g) -> NaHCO3 (aq)}$$
But, what would happen if just a solid block of $\...
1
vote
1
answer
12k
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Will silicon dioxide react with hydrochloric acid?
I have the following equation, based on the reaction of $\ce{SiO2}$ with $\ce{HF}:$
$$\ce{SiO2 + HCl -> SiCl4 + 2 H2O}$$
I want to know if this reaction is indeed feasible, what conditions may be ...
2
votes
1
answer
1k
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Equation for reaction between chlorine fluoride and potassium bromide
The equation given in the answer key was
$$\ce{ClF + 2KBr → KCl + KF + Br2}$$
However won't the $\ce{KCl}$ also react with $\ce{ClF}$ to form $\ce{KF}$ and $\ce{Cl2}$, resulting in the net reaction ...
0
votes
0
answers
52
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Is the water absorbed by sodium polyacrylate available to react?
I'm curious whether the water absorbed by sodium polyacrylate would react with alkali metals, or be trapped by the sodium polyacrylate.
6
votes
1
answer
323
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Does aluminum oxide react with rubidium?
I have rubidium vapor inside of the vacuum chamber. Inside the vacuum chamber, there are two flat stainless steel coated with aluminum oxide at temperature ~100 °C.
Since rubidium is active, I am ...
10
votes
1
answer
1k
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Reactivity of different isomers of N2F2
$\ce{ N2F2}$ exists in two forms cis and trans. Today my chemistry teacher tells me that among the two only cis form takes part in reactions and that it is more reactive. But I have read elsewhere ...
41
votes
5
answers
19k
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Why does potassium react more violently with water than lithium?
Recently, I was telling my friends about the violent reaction that takes place when you throw potassium into water. Soon after, a friend of mine claimed that lithium would react more violently than ...
6
votes
2
answers
4k
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What noble metal is most resistant to oxidation by diatomic oxygen in air at room and elevated temperatures?
To clarify, by noble metals in this case I mean all platinum metals + gold, no copper, silver or rhenium. These noble metals are described as having low reactivity, but which one is least reactive or ...
9
votes
1
answer
3k
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How does conjugation affect reactivity?
From this topic on MOs of butadiene vs ethene, it is clear that when two ethene molecules are combined to extend the conjugate chain, the HOMO is raised in energy and the LUMO is lowered in energy. ...
4
votes
3
answers
7k
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Why is oxygen an oxidizing agent?
Why are diatomic oxygen molecules STILL reactive especially with metallic elements like sodium and copper even at room temperature?
You would think that since the two oxygen atoms already have the ...
0
votes
0
answers
394
views
What's the chemical reaction involved when adding Caesium to water?
According to the Notting Hill and Ealing High School, the reaction of caesium $\ce{Cs}$ with water $\ce{H2O}$ gives the following equation,
$$\ce{2Cs (s) + 2H2O (l) → 2CsOH (aq) + H2 (g)},$$
producing ...
9
votes
1
answer
25k
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Reaction between magnesium metal and sodium hydroxide: Does this even happen?
Came across this question in a book:
Among aluminum, zinc, tin and magnesium, which metals (if any) will react with an aqueous solution of sodium hydroxide to displace dihydrogen?
The answer to ...
9
votes
2
answers
480
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I can't choose the set of 3 chemicals with each of which Si will react (out of 5 possible sets)
This is one of the questions used in the Russian State Chemistry Exam. One needs to select the set of chemicals in the second column such that each of them would react with the element or chemical in ...
1
vote
1
answer
8k
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Relation between acidity and reactivity?
Up till high school, I've been taught that reactivity and acidity of a substance in a relation that if a substance is acidic and if it's acidity is higher (comparatively to some other substance) than ...
-3
votes
1
answer
6k
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Do copper and ammonium hydroxide react?
According to the activity series positions of copper and ammonium, with ammonium being higher up on the series compared to copper, it would be predicted that ammonium replace copper in a single ...
16
votes
4
answers
28k
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Why is fluorine more reactive than chlorine?
Why is fluorine more reactive than chlorine despite chlorine having a higher electron affinity?
9
votes
1
answer
812
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Is ruthenium really invulnerable to aqua regia?
Recently, I answered a question "What metals aren't dissolved in/attacked by aqua regia?" in which I finally concluded "ruthenium is resistant to aqua regia in any form at any concentration of ...
2
votes
1
answer
2k
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Hydroxide formation: reaction of group 13 elements with water
I was studying about 13th group elements and I found that in this group Al and Tl react water to form a hydroxide and oxide respectively, but the rest of the elements don't react to form hydroxides.
...
1
vote
1
answer
123
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Is there anything that can react with molecular gaseous nitrogen? [closed]
I am looking for something to react with nitrogen in the air. Is there any substance that can react fast with molecular nitrogen at room temperature?
-3
votes
2
answers
5k
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Why is caesium considered the most reactive element and not fluorine? [closed]
Some people say caesium is most reactive element. I thought it to be fluorine as it is the element that reacts with almost all elements (except couple of inert gases). But caesium won't react many of ...
6
votes
0
answers
2k
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How to compare the oxidizing power of perhalate ions
In my book the oxidizing power in descending order of the following is given as: $\ce{BrO4-} > \ce{IO4-} > \ce{ClO4-}$
My doubt is regarding their order of oxidizing tendency.
I thought that ...
2
votes
1
answer
2k
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Reactivities: interhalogen compounds versus halogens
My textbook says that interhalogen compounds are more reactive than halogens, because the $\ce{X-X}$ bond in halogens (for example, dichlorine or $\ce{Cl2}$) is stronger than the $\ce{X-X'}$ bond in ...
0
votes
2
answers
12k
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Why does calcium oxide react with sulfur dioxide?
Which of the following compounds reacts with calcium oxide, $\ce{CaO}$?
(a) $\ce{K2O}$
(b) $\ce{Na2O}$
(c) $\ce{SO2}$
(d) $\ce{MgO}$
I thought that since sodium is higher in the reactivity ...
3
votes
0
answers
166
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Could any constituent of normal human urine produce a false positive in a Kastle-Meyer test for presence of blood?
From my understanding, one forensic test for the presence of traces of blood at a crime scene is (or was) the Kastle-Meyer test. Doing some research, I understand that in the test, hemoglobin reacts ...
8
votes
1
answer
10k
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Which allotrope of phosphorus is kinetically the most stable?
Which allotrope of phosphorus is kinetically the most stable?
I ruled out white and yellow as being quite reactive.
Red and black allotropes are both polymeric and comparitively less reactive.
...
11
votes
1
answer
22k
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How does HF dissolve glass?
By what mechanism does HF proceed in dissolving glass? Why is it the only acid that has this capability? Is it because of the small size and high electronegativity of fluorine?
14
votes
2
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18k
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Why does N₂ react with O₂ to Form NO at high temperatures?
This also raises questions that I have about the Haber Process which produces ammonia ($\ce{NH3}$) from molecular nitrogen ($\ce{N2}$) and hydrogen ($\ce{H2}$).
I have heard multiple times that bond ...