All Questions
Tagged with reactivity inorganic-chemistry
55
questions
2
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2
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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 ...
- 30.4k
-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 ...
- 55
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....
- 22.5k
-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 ...
- 34.4k
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....
- 1
9
votes
2
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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 ...
- 26.3k
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 ...
- 60.1k
6
votes
2
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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 ...
1
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1
answer
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Here are four observations of the reactions of four metals
Here are four observations of the reactions of four metals.
Metal F and G react slowly with water
Metal H displaces metal G from its chloride salt solution
Metal E does not react with dilute acids
...
- 2,073
10
votes
3
answers
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How can I relate the reactivity series to electronegativity and ionization energy?
I am trying to figure out how the reactivity series comes about. My understanding is that elements with a higher electronegativity will be more reactive than elements with a lower electronegativity, ...
- 2,073
2
votes
0
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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} \...
- 1,247
10
votes
3
answers
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Why doesn't copper react with hydrochloric acid while the other metals do?
5) Which one of the following metals does not react with hydrochloric acid?
A. zinc
B. magnesium
C. iron
D. copper
E. aluminium
The right answer must be copper, but why ...
CommunityBot
- 1
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 ...
CommunityBot
- 1
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 ($\ce{Ra3N2}$)....
- 26.3k
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 ...
- 22.5k