Questions tagged [ions]
For questions about ions - atomic or molecular particles having a net electric charge. Do NOT use this tag just because your question involves ions but is not about the ions themselves (as in electrochemistry, etc.).
608
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Which ions are accounted for in total and net ionic equations?
There are a number of things I don't understand about ionic equations.
First off, when you do net ionic equations, is it correct that you're only focusing on precipitates? The way I understood it, ...
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1
answer
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Converting sulfate ion to sulfur trioxide?
I have a solution of only sulfate ions (no other positive ions belonging to the sulfate ions, because the positive ions are attached to the intermediate in a catalytic reaction).
I want to convert ...
4
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2
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Notation of beta decay
Is it an ion or a neutral atom that is created through beta decay?
For example: $_6^{14}\mathrm C \to ~ _7^{14}\mathrm N + \mathrm e^- + \mathrm{v{_e}}^{-}$
Isn't $_7^{14}N$ an ion since neutron ...
8
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1
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Difference between sodium ion and a transition metal ion dissolving in water?
In class, I learned that when $\ce{NaCl}$ is dissolved in water, the partially negative oxygen part of the water molecules surround the $\ce{Na+}$ ion and energy is given off (hydration enthalpy)
...
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ions proportion [closed]
I have a precipitation reaction of this form:
$\ce{Ca^{2+} + CO_{3}^{2-} → CaCO3}$
How many mole of $\ce{Ca^{2+}}$ ion is contained in a 200ml solution?
I'd like to know how to calculate this, ...
3
votes
1
answer
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Isoelectric pH of colloids?
How did we derive the relation between the isoelectric pH and the dissociation constants for the amino and carboxyl groups on zwitterionic amino acids.
$$pI=\frac {pK_{a1}+pK_{a2}}{2}$$
where $$\ce{...
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0
answers
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Split carbonate ions?
Can you split carbonate ions into their constituent elements directly in the carbonate form? (so not first producing $\ce{CO2}$ and then decomposing the carbon dioxide)
(edit:)
I know that when ...
4
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1
answer
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Do chaotropic and kosmotropic affects occur in polar non-aqueous media?
For example can I introduce salts that have a chaotropic or kosmotropic affect on ethanol? Or is this phenomenon restricted to water? If this phenomenon does occur in other polar solvents, does it ...
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Evaporating the water of a solution of only carbonate ions and water gives?
I have a solution with only $\ce{CO_3^{2-}}$ ions and water.
What would happen with the carbonate ions if I were to evaporate the water of that solution (in a vacuum)?
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3
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Speed of ionic reactions?
Why are ionic reactions extremely fast, as compared to other gaseous
reactions?
The ionic reactions (precipitations, neutralizations etc.) are extremely fast (somewhere about $10^{12}$ times ...
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1
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Ions and Polyatomic Ions [closed]
Before a sodium atom and a chlorine atom combine together to form the ionic compound $NaCl$, they are just neutral atoms. However, when an electron is transferred from the outer energy level of the ...
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Is ionic bond just formed by "electrostatic" interaction between two oppositely charged ions?
According to the definition of ionic bond:
An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.
If we consider the above ...
2
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1
answer
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Reacting calcium with warm water and magnesium oxide with carbon dioxide, what are the products?
So I have several descriptions of reactions and I have to give the net ionic equation. Are these just the equations or are they the proper net ionic ones?
Solid calcium is added to warm water.
$$\ce{...
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1
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why there is no simple rule to predict the possible ionic charges of element in middle of periodic table
I know element in left two columns have 1+,2+... and right ones 1-,2-.
But in middle is all over the place. And with multiple charges.
What defines that if this element is gonna have this charge. ...
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Do ligands with a positive charge exist?
Are there positively charged ligands which can bind to a central metal atom to form coordination compounds?
My thoughts:
I know that ligands are Lewis bases which donate a pair of electrons, and the ...
0
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1
answer
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What is the charge on the copper ion in antlerite?
Antlerite is $\ce{Cu3(SO4)(OH)4}$.
I'm trying to get the charge on the copper ion in this substance. So far I have the mass of $1$ mole of antlerite, its percent oxygen content, and the number of ...
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2
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Does the hydrolysis speed increase when more H+ ions are in the solution?
In hydrolysis of polysaccharides, does the hydrolysis speed increase when more $\ce{H+}$ ions are present in the solution?
So if I were to use $\ce{H2SO4}$ instead of $\ce{HCl}$ (same volumes) then $\...
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3
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Express the maximum work from a voltaic cell
The net cell reaction of an electrochemical cell and its standard potential is given below:
$$\ce{ Mg + 2Ag+ ->Mg^{2+} + 2Ag} \ \ \ \ \ \ \ \ E^\circ=3.17\:\mathrm{V}$$
The question is to find the ...
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2
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Which computational method/basis set should I use for small molecular ions?
I apologize for a perhaps newbie question.
I would like to compute the potential energy surface for several small molecular ions, like $\ce{H2+}$ and $\ce{H3+}$, using quantum chemistry software. ...
3
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1
answer
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Why does sodium require energy to ionize?
If you look at $\ce{Na}$, it has a very low ionization energy, but the question is, why does it have an ionization energy at all? If it can get to the electronic configuration of $\ce{Ne}$, by losing ...
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Where does the extra electron go in ionic compounds?
In ionic compounds, where does the extra electron go? Or, in case of a cation, from which shell does it come?
Consider, for example, $\ce{OH^{-}}$, where did this extra electron go in the electronic ...
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answer
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How does water deionization process work?
What are the technical/scientific details behind the process of water deionization? How does deionization machines like those manufactured by Millipore work?
4
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Soil-solution cations in competition for exchange sites
How could one determine the likelihood of one cation displacing another on a negatively charged exchange site of a clay particle?
For example, in a soil solution containing equal parts (by number of ...
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Which ions do not react with each other in a solution? [closed]
Which ions do not react with each other in solution?
A. $Ba^{2+},SO_4^{2-},NO_3^-$
B. $Cu^{2+},SO_4^{2-},OH^-$
C. $Ag^+,Cl^-,H^+$
D. $K^+,Fe^{3+},Br^-$
I have no idea why the answer is D. Please help....
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How can potassium disappear after cooking?
I read this at this webpage: http://www.whfoods.com/genpage.php?dbid=90&tname=nutrient#impactcookingstorageprocessing
How do cooking, storage, or processing affect potassium?
Potassium ...
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6
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Conducting current in electrolytes
I keep trying to figure out how current is conducted through an electrolyte but all I can find are incomplete answers. They say the ions conduct, but the specifics are poorly explained or absent.
I ...
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4
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Is perchloride the same as perchlorate ion?
I read about perchloride in a talk and after trying to search for its chemical formula, the search results imply that perchloride is actually named perchlorate. Is this correct?
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Why is there a charge on COOH⁻¹?
The dissociation of formic acid ($\ce{HCOOH}$) is:
$$
\ce{HCOOH -> H+ + COOH-}
$$
Why is there a charge on $\ce{COOH^{-1}}$
though? Is it achieved through:
$$1\times(\ce{C^{4+}}) + 2\times(\ce{O^...
3
votes
3
answers
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What is Molar Conductivity of an electrolytic solution
Please explain the physical meaning it carries ? And how is it that it can increase with dilution ?
And why is it called Molar ?
And what is equivalent conductivity ?
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In acidic solution, what does ClO₃⁻ reduce into?
In acidic solution, what does $\ce{ClO3-}$ reduce into and, most importantly, why? It's $$\ce{6e- +ClO_{3}^- +6H^+ -> Cl^- + 3 H_2O}.$$
Now, with the gift of foresight, why was the equation for ...
4
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1
answer
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How to rationalise the coordination number of CsCl versus NaCl?
Question:
Suggest an explanation for the coordination number in the $\ce{CsCl}$ lattice being different from those in $\ce{NaCl}$.
Standard answer:
Caesium ion is larger than sodium ion, hence ...
3
votes
1
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Identifying a quadruply charged anion containing three carbon atoms
This linear polyatomic ion containing three atoms of carbon has a negative four charge and is only found bonded with lithium and magnesium.
Could anyone identify this for me? It's from a quiz bowl ...
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0
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Selectivity Coefficients of Ion Exchange Resins - Selectivity Reversal with TDS / Ionic Strength
I'm currently studying ion exchange resins and generally getting a bit stuck on some points of information which I do not fully understand / are not very well explained within the literature.
I ...
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1
answer
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Electronic and geometric configuration of Fe(OH)₂
I'm having serious problems in the electron configuration of iron dioxide $\ce{Fe(OH)2}$ because all I could come up with was $\ce{Fe}$ double bonded with each oxygen and single bonded with each ...
3
votes
1
answer
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Why does electrolysis take so much time?
What makes electrolysis or electroplating take so long ? What stage takes longer when ions are attracted to electrodes or when they gain or lose electrons at electrode.
And if we are talking about an ...
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Has the molecular diatomic oxygen trianion been observed or predicted?
Has diatomic oxygen ever been observed with a 3− charge, i.e. $\ce{O_2^{3-}}$? Have any ab intio calculations been done on this ion?
Update:
Just to summarize some of the answers below and add my ...
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Can the electrolytes be in gaseous state? [duplicate]
Possible Duplicate:
Will gaseous ionic compounds be free moving ions?
I know it sounds extremely expensive, but what if we could heat the ionic compound to evaporate it and achieve the lattice ...
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4
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Will gaseous ionic compounds be free moving ions?
I knew while learning about electrolysis that if the ionic compound is molten it becomes free moving ions.
If that is the case, what will happen if I continued heating till it reaches the boiling ...
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1
answer
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What is the exact definition of Salinity?
I am a bit unclear on the definition of salinity. I have always thought of it as simply total dissolved ions.
Wikipedia seems to agree "saltiness or dissolved salt content" but many other sources ...
2
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0
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Why does the passivation layer in DRIE protect just the mask and not the substrate?
Here's a good link as an introduction to DRIE:
BSAC: DRIE Process Development
The $\ce{C4F8}$ (refer Pg. 9 on the link) passivates the entire top layer. But when $\ce{SF6}$ ion bombardment occurs, ...
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1
answer
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Are redox half-reactions "real"?
Are the half-reactions used in analyzing redox reactions a real thing or are they a conceptual shortcut?
Is there a way to, however briefly, run a half-reaction by itself without the corresponding ...
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2
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How does Phosphorus Pentachloride bond?
The thing I am having trouble with: why does $\small\ce{PCl4}$ form a +1 ion and $\small\ce{Cl}$ a -1 ion?
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Determining the exact charge of ions that will be formed by an atom using the periodic table
I don't know how to obtain the "exact charge of the ions" that will be formed by each atom mentioned. I also have to figure out whether they are positive or negative.
Hydrogen, for example, can form ...
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Samsung's S-Plasma Ion - scientific basis
Has anyone come across a scientific study of the S-Plasma Ions that Samsung claims will purify air from microbes, allergens and free radicals? I would prefer publicly available research findings.
The ...
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1
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What is the exact nomenclature of ionization?
I'm a little confused as to what reactions are considered ionizations. Is there any requirement for the educts, for example?
Some references suggest that it's only considered an ionization if you ...
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1
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Difference between non-thermal and thermal ionized gases
Why or when does non-thermal plasma become thermal? How do we know before hand if the ion temperature will differ from the electron temperature, on what parameters does it depend - where is the ...
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2
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Can I test for lead with household chemicals?
I picked up a metal fence loop cap today and took it home just because I liked the shape.
(^ not mine)
I cleaned it, but some of the paint is chipping off. I'm only vaguely thinking about lead, and I'...
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What is the behavior of a Zwitterion during ion exchange chromatography?
We're interested in purifying a protein that has an azide moiety using ion exchange chromatography. Due to its unique structure, the moiety is a Zwitterion with a novel chemical behavior. My question ...
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Why is 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI-BF4) often considered a prototypical room temperature ionic liquid?
It seems from a brief search of the literature that 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI-BF4) is a prototypical room temperature ionic liquid (RTIL) that has been studied extensively. ...
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Hydration of H⁺ ion
I know that $\ce{H+}$ is not possible in water and it is present as $\ce{H3O+}$. But later on I come to know that even $\ce{H3O+}$ is not possible and that it is present as $\ce{H9O4+}$.
Why does this ...