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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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
52 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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41 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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2answers
39 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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42 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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41 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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0answers
29 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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25 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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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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48 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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46 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
35 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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47 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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32 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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23 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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27 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.
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1answer
182 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 ...
7
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1answer
86 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 ...
0
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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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43 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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51 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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161 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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153 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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39 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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1answer
121 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 ...
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1answer
207 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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67 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: $$\space$$ ...
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107 views

Can carbon and titanium bond?

Can carbon and titanium form an ionic bond, because the both have 4 valence electrons? Like so:
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47 views

Charge:ionic radius ratio

can someone please explain what the charge to ionic radius ratio of a metal hydroxide would mean for its solubility. As in would there be a trend e.g. as the ratio gets larger the solubility product ...
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193 views

Sodium chloride and melting of the ice

My question is this, In European countries, they use NaCl or KCl to melt ice during the winter season. In Asian Countries, they use NaCl to keep the ice without melting. (Ex- Ice cream boxes, Beer ...
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27 views

Finding out the composition of seawater/brine?

as part of a project, I am working on precipitating salts from seawater and brine. I have a sample of seawater and I need to measure the concentrations of Mg2+, Ca2+ and Li+ present in the sample. As ...
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1answer
72 views

What is the net ionic equation for LiNO3 NaCl?

I've heard the following net ionic equation doesn't react: $$\ce{Li+ + NO3- + Na+ + Cl- ->~"nothing"}$$ Is this true? Could someone explain me why it would not?
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1answer
296 views

Does sodium cyanide react with water, and can it cause an explosion?

According to some conspiracy theory, the explosion that happened last year in Tianjin (China) wasn't caused by sodium cyanide. Can sodium cyanide react with water, and can it cause an explosion if you ...
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68 views

What type of bonding is present in lithium tetrahydridoaluminate?

I can tell that the negative ion has one bond which is a co-ordinate/dative covalent bond. However, overall, would you say that lithium tetrahydridoaluminate (lithium aluminium hydride) is ionic? If ...
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1answer
141 views

Predicting color of precipitate

Is there any way of predicting whether a precipitate will be colored? I know that for solutions, transition metal ions with unfilled d-orbitals will have color because of d-orbital splitting in the ...
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Citric acid chelates calcium carbonate more than ethanoic acid, why does this result in a faster rate of reaction?

I performed an experiment using egg shells (calcium carbonate) to represent teeth and reacted the calcium carbonate with acids. When measuring the rate of reaction citric acid had a higher rate of ...
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96 views

Would tin (II) sulfide be considered a covalent network solid?

Considering that tin has a Pauling electronegativity of 1.96 and sulphur 2.58, and that a bond is considered to be ionic with a Pauling EN difference of approx. 1.7 at the least, would tin (II) ...
3
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1answer
251 views

Is FeS2 both an ionic and covalent compound? [duplicate]

Iron (II) disulfide. Iron pyrite. Fool's gold to some. But what bond does it fall under? It could possibly be used for both? This would give a deeper understanding into other like examples, where ...
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1answer
64 views

Is lithium L-threonate a potential brain medicine?

Lithium ions have known neuroprotective qualities. That would explain its therapeutic benefit in some mental disorders. It is also well known that lithium carbonate must be taken in toxic doses to get ...
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302 views

Is NaCl crystal always going to have even number of atoms?

I just read: In $\ce{NaCl}$, atoms don't aggregate so as to form discrete molecules but they are held together in a network structure. The ratio of the $\ce{Na}$ to $\ce{Cl}$ atoms in a sodium ...
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159 views

Valency and Chemical Formula

If an element valency corresponds to the group number in the periodic table, Oxygen would be 6 right? The question states; Species: Li, O I assume Li is 1 and O is 6, so my chemical formula is ...
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1answer
170 views

Why aren't the copper(II) ions in CuSO4 precipitated by hydroxide ions from water?

From my own experience and literature, I know that $\ce{CuSO4}$ is well soluble in water and dissociates into $\ce{Cu^2+}$ and $\ce{SO4^2-}$. $\ce{Cu(OH)2}$, however, is not: $K_\mathrm{sp} = 2 \cdot ...
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2answers
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MgCl2 acidic or neutral in water?

I'm currently taking chemistry 12. On our test we were asked, when given a $0.1~\mathrm{M}$ solution of certain compounds whether the resulting solution when added to water would be acidic, basic, or ...
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81 views

How to clean copper(II) sulfate crystals from sulfuric acid?

I am going to prepare copper(II) sulfate by electrolysis with sulfuric acid for crystal growing. How would I separate the copper(II) sulfate from the sulfuric acid left over from the electrolysis ...
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Continuous flow mass spectrometer for isotope analysis

If i took thousands of discrete samples of mineral fragments in a field study using a specialized drill, what mass-spectrometry techniques/equipment would allow me to analyse the samples as fast as ...
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219 views

What determines whether a double displacement reaction will occur?

In normal displacement reactions, reactivity plays a large role and sometimes the reaction doesn't even happen. So is there anything limiting double displacement reactions? For example $\ce{2KI + ...
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33 views

Action of NaCl in different conditions [closed]

$\ce{NaCl}$ is used as a freezing mixture in ice cream, while the same $\ce{NaCl}$ is used for melting of ice on roads (as a sweeping agent for ice). Discuss its mechanism.
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108 views

Do I need to include lattice energy when calculating the energy required to vaporize NaCl?

I understand that the lattice energy is the energy released when a crystal forms and that's the reason it takes the negative sign. But do we need to add this energy again when we are trying to ...