Compounds in which at least some of bonds have ionic character stronger than covalent or metallic. Many compounds called salts are ionic compounds but not all of them.

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If there is polarising power of cation & polarizability of anion then why isn't there polarizing power of anion & polarizability of cation [on hold]

I'm just a 11th grader so it would help if the answers aren't too complicated. So my doubt is that wouldn't anion attract cation in an ionic bond to produce some covalent character? Wouldn't a smaller ...
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1answer
47 views

How to make γ-MnO2 in a lab?

I am working on Li-ion batteries, and I need to use γ-$\ce{MnO2}$ (electrolytic manganese dioxide). I have googled and read quite a few papers, but I am not very sure of those methods. I'd love ...
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0answers
45 views

Nature of Bond in Methylammonium lead Halide

I want to know about the nature of bond in Methylammonium Lead halide(CH3NH3PbX3),a perovskite compound.I went through wikipedia and many other sites and through certain research papers but I didn't ...
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2answers
55 views

Chemical Formula for Barium Chloride

Barium Chloride is represented as $\ce{BaCl2}$. Since chlorine is a diatomic molecule, It should be denoted as $\ce{Cl2}$. Formulating, we get \begin{array}{|c:cc|}\hline \small \rm Element & ...
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3answers
163 views

Why exactly does molten NaCl explode, when it is poured into water?

Why does molten $\ce{NaCl}$ explode, when it is poured into water? $\ce{NaCl}$ has a high melting point, $1074\ \mathrm{K}$ ($801~\mathrm{^\circ C}$). $\ce{NaCl}$ has a molar mass of $58.44\ \mathrm{...
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1answer
40 views

What happens when potassium iodide is added to a copper (II) salt?

$$\ce{Cu^2+ + KI -> ??}$$ I thought of this reaction: $$\ce{Cu^2+ + 2KI -> CuI2 + 2K+}$$ But since $\ce{CuI2}$ doesn't exist, the $\ce{I-}$ ions must reduce $\ce{Cu^2+}$ to $\ce{CuI}$ and ...
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43 views

What is the structural formula of alkali hypohalite: MOX or MXO?

Recently I came across this question and in the comment section, there was an argument regarding the formula of sodium hypoiodite which kept me wandering: what is the actual formula of alkali ...
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1answer
32 views

How to measure saturated salinity and mineral levels for flaked sea salt?

I am a sea salt enthusiast looking to make the perfect flakey sea salt. I start with sea water and boil it down to a thick brine. Then with less heat I reduce the brine more slowly and inverted salt ...
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2answers
51 views

Is the reaction of silver nitrate and copper endothermic or exothermic?

Is the following reaction endothermic or exothermic and why? $$\ce{2 AgNO3 + Cu -> Cu(NO3)2 + 2 Ag}$$ EDIT: I have a feeling that it is exothermic due to the fact that it is spontaneous and will ...
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1answer
56 views

Why does Cu(OH)2, which is generally insoluble due to low Ksp become soluble in excess of a base, such as NaOH?

Where does the "excess" criteria come into the picture? Also, can the equilibrium $$\ce{Cu^2+ + 6 H2O <=> [Cu(H2O)6]^2+}$$ participate in the solubility process in any case? So there are 2 ...
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2k views

Why does KCl come in amber coloured bottles?

I remember from school that photosensitive chemicals are kept in amber coloured bottles. Is KCl photosensitive? I read up the impurities list on the bottle and it says that it may have bromides too? ...
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0answers
25 views

Quantitative analysis of Ni and Sr

I have a sample containing $\ce{K, Ni, Sr, NO3, Cl}$ and $\ce{I}$-ions. I need to determine the amount of $\ce{Ni}$ and $\ce{Sr}$-ions, and I would very much like some suggestions on how to do this.
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42 views

What is a good electrolyte?

During lab, we had been asked to add different metals to a ferroxyl indicator, such as zinc and magnesium. One of the questions is that the gel (ferroxyl indicator) contains good electrolytes such as ...
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2answers
64 views

Problem dissolving iron in HCl

I was trying to dissolve iron metal in HCl to make iron chloride, but ran into some problems. I'll give a brief background of my experiment. I took iron nails and put them in a container filled with ...
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0answers
39 views

Is Fajan's rule only applicable to ionic compounds?

Is Fajan's rule applicable to only ionic compounds? The rules only talk about anions and cations, but I have come across examples like $\ce{MnO4-}$ in which high oxidation state of $\ce{Mn}$ leads to ...
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0answers
27 views

Does the activity product decrease with increasing ionic strength?

I have a question regarding what happens to the solubility of $\ce{CaSO_4}$ or the rate that $\ce{CaSO_4}$ will dissolve when we add $\ce{NaCl}$ to the solution: $\ce{CaSO_4}$ will dissolve into $\...
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1answer
90 views

What is the colour of chromium(III) chloride solution?

I had a question asking about the colour of the solution of chromium(III) chloride in my exam, all my colleagues have different answers, I couldn't find any exact answer after searching!
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2answers
26 views

Problems with creating sodium hydroxide from sodium (hydrogen) carbonate

If sodium hydrogen carbonate (baking soda, $\ce{NaHCO3}$) is heated to greater than $50~\mathrm{^\circ C}$, it will release carbon dioxide and water to form sodium carbonate: $$\ce{2NaHCO3 -> ...
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1answer
97 views

AlCl3: ionic and covalent?

My textbook states that AlCl3 is both an ionic and a covalent compound .How is it so?
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31 views

Ionic radius paradox

consider a compound AB which forms cubic close packing(FCC) structure in which B forms FCC and A occupies the octahedral voids.let x and y be the radius of A(cation) and B(anion) respectively.if we ...
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73 views

Why is MnSO4 colourless?

I get it that transition metal salts have colour due to d-d transition from $\mathrm{t_{2g}}$ to $\mathrm{e_g}$ orbitals in octahedral and the opposite in tetrahedral but why would $\ce{Mn^2+}$ not ...
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1answer
102 views

What will be the reaction between tin (II) chloride and copper (II) chloride?

I just tried conducting an experiment during lunch today. Now, I calculated this reaction 4 days ago dealing with electrochemistry, $$\ce{SnCl2 + CuCl2 -> Cu(s) + SnCl4}$$ Theoretically, I got ...
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1answer
56 views

Why do ionic compounds have such high melting points and boiling points? Do they have IMAFs? [duplicate]

Molecules have IMAFs that determine the melting and boiling points. What about with ionic substances? What keeps the different compounds together? Do they experience IMAFs? I've heard that it's the ...
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78 views

Does increasing electronegativity imply more covalent character?

If there is a larger electronegativity difference between two atoms, shouldn't the compound be more ionic? In an explanation of the diagonal relationship, it states that "on moving across the period, ...
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1answer
53 views

Why Does Coordination of Metal Ions Happen Anyways?

I've been studying coordination chemistry, but I still have a fundamental question about the area: why do transition metals even form coordination compounds, while main group metals do not? Why can't ...
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1answer
58 views

Why triiodide ion does not form ionic bond with cation having +2 charge?

In general, I found that triiodide ion generally forms ionic bond with cations having +1 charge like $\ce{NH4+I3-}$, $\ce{K+I3-}$, $\ce{Tl+I3-}$. But, I have never seen triiodide ion forming ionic ...
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35 views

What is the most stable oxide of Fr?

I read that the heavier alkali metals, like K, Rb, and Cs all prefer to form superoxides. Since Fr is the heaviest alkali metal, I assumed it would follow the same trend as the previous alkali metals, ...
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26 views

Ionic Compounds and finding Anions

K2HPO4 is an ionic compound with an -2 Anion and a +1 Cation. The thing I'm finding hard to understand is why the four Oxygen atoms don't add to the Anion charge. E.g. H+1 P-3 O-2 O-2 O-2 O-2 = ...
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0answers
35 views

Formula of ionic compound for solubility equilibria

I have a question for writing formula of ionic compound for solubility equilibria. $$ \ce{CaSO_4 (s) <=> Ca^{2+} + SO^{2-}_4} $$ Where do $2+$ and $2-$ come from? $$\ce{Ag_2CrO_4 (s) <=>...
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50 views

solubility of silver benzoate

The ionisation constant of benzoic acid is $6.46*10^-5$ and Ksp of silver benzoate is $2.5*10^-13$. How many times is silver benzoate more soluble in a buffer solution of pH-3.19 as compared to water. ...
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1answer
25 views

Is it possible to have an airborn fluorescent particle that reacts to lightning?

I want to measure the expansion of the atmosphere when it is heated and impacted by lightning, to have an idea of the propagation of sound waves made by lightning. To do this, the ideal would be to ...
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2answers
51 views

Potassium Alum Crystals

This is a question regarding the crystallization of $\ce{KAl(SO4)2 . 12 H2O}$. I have an idea of what to do (I'll explain later in the explanation), but I would like to hear other suggestions encase ...
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1answer
47 views

Energetics of Bond formation

Back to chemistry after 2 months and got stuck in the beginning! That's why I don't like it. Anyways, come to the question please. Following are the words from my textbook (Don't ask the name ;-) ...
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24 views

Amphoteric compound versus base

Why should $\ce{NaHCO3}$ be used to titrate unreacted iodine and $\ce{H+}$ ions instead of $\ce{NaOH}$? Resolving them into ions, $\ce{NaOH}$ takes priority over $\ce{NaHCO3}$ as $\ce{OH-}$ is a ...
3
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1answer
36 views

Structure of crystals vs melting point

Calcium oxide has a melting point of 2700C and sodium chloride has a melting point of 801C, if they have the same crystal structure and ions are about the same distance in each crystal why is there ...
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68 views

Which has more ionic character, LiF or K2O?

After drawing the structures of both and considering dipole moment, doesn't it seems that all K2O should have more ionic character than LiF? My textbook says its LiF.
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36 views

Is lithium hydride a salt?

Hydrogen is generally considered a non-metal, and a non-metal and a metal often makes a salt. However, lithium hydride seems like a special case. The wikipedia article does not clearly state if the ...
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31 views

Are Tellurium Fluoride or Antimony Fluoride Ionic?

I would like to know if any of the tellurium fluorides or antimony fluorides are ionic. I am aware that the difference in electronegativity is greater than the 1.665 cutoff indicating ionic bonds. ...
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29 views

what is the number of meq in zinc citrate? [closed]

My zinc citrate capsule has 30 mg of elemental zinc in it. I would like to know the number of meq in this zinc citrate.
3
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1answer
344 views

How does salt concentration affect corrosion rate of iron?

I have conducted an experiment where I test the affect of $\ce{NaCl}$ concentration on corrosion rate of iron. I did this in an environment were all of the iron was submerged in water and the water ...
8
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1answer
89 views

How to recycle 60 tons/hour of CaCO3?

I hope this is the right place to ask. I'm not a chemist so my question may seems obvious but it's not for me. I work in the egg industry and we produce every hour 60 tons of dried egg shells as ...
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1answer
39 views

How do I figure out the amount of water (mL) and amount of Aluminum (g)?

We have a project where we have to extract copper from copper sulfate. But my group is given a powder version ($5~\mathrm{g}$), so we have to first dilute it with water and then combine it with ...
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0answers
49 views

Is the difference between ionic and covalent bonds continuous or is there some non arbitrary point where one becomes the other?

Covalent bonds can be dipole. So is an ionic bond a very dipole covalent bond or is my understanding wrong?
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61 views

Color imparted to flame and color of coordination compounds

When we heat a ionic substance/compound, the ionic bond gets weakened and the metal is ionized. Is the color imparted to the flame due to absorption of light? i.e. Do we see the remaining wavelengths? ...
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192 views

Since PbCl2 is insoluble in water, how is it that lead leached from pipes due to Cl- reaction can become ingested?

I have reviewed a discussion concerning the salt content in the Flint River being directly connected to lead being leached from civic water pipes in Flint, Michigan. Wikipedia has a site dedicated to $...
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209 views

Why does phosphoric acid mask the colour of Iron(III) complex in water?

In the redox titration of Iron(III) with Permangante or dichromate we use Phosphoric(V) acid to "mask" the color of Iron(III) because it interferes with the end point colour change. What's the ...
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41 views

Using electron affinity to calculate lattice energy

I am trying to calculate the lattice energy of $\ce{CaBr2}$, I am uncertain of how to incorporate the electron affinity value provided for $\ce{Br2}$ into my calculation. Since electron affinity is ...
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170 views

Color of Anhydrous Transition Metal Salt

Why are some anhydrous transition metal salts colored? Here are some examples I found. Anhydrous cobalt(II) chloride ($\ce{CoCl2}$), with sky-blue color. Anhydrous chromium(III) chloride ($\ce{...
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1answer
333 views

What is the structural difference between MnOOH and MnO(OH)2?

Both $\ce{MnOOH}$ and $\ce{MnO(OH)2}$ can be called manganese oxyhydroxide. But both of them cannot coexist together, so only one can be called manganese oxyhydroxide. Which one? The mineral ...
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111 views

Lewis structure for Calcium Phosphate

$$Ca_3(PO_4)_2$$ Since the calcium and phosphate share an ionic bond, and the phosphorous and oxygen share a covalent bond, should the lewis structure be as the one in this link: $$\space$$ https://...