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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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 ...
6
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0answers
61 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
24 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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31 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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1answer
33 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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63 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 ...
4
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1answer
52 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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29 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 ...
3
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1answer
57 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
57 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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0answers
20 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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1answer
67 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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21 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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3answers
109 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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0answers
25 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
36 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
278 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 ...
3
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0answers
52 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
48 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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59 views

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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2answers
49 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
148 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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32 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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1answer
285 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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1answer
79 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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91 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
253 views

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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59 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 ...
6
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1answer
73 views

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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1answer
73 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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1answer
32 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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1answer
74 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 ...
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27 views

Complete Ionic and Net Ionic Equations

My lab have several different equations and I'm lost. 1.Dissolution equation I have put a $1~\mathrm{mL}$ of water in sodium bicarbonate ($\ce{NaHCO3}$) and for my lab I need to write the ...
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1answer
114 views

What is the geometrical structure of Pb3O4?

I'm confused by the structure of Pb3O4. There are some sites claiming that it is a six membered ring of alternating Lead and Oxygen atoms with another Oxygen atom in the center bonding with 2 out of ...
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3answers
274 views

Is KHF2 an ionic compound or a covalent compound?

The statement below is an excerpt from my school textbook:- Because of the tendency of fluorine to form hydrogen bond, metal fluorides are solvated by $\ce{HF}$ giving species of the type ...
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Has a carbon compound ever been found having an ionic bond?

Though it is highly unlikely, has any carbon compound been found to make an ionic bond and to exhibit ionic properties?
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140 views

Copper cycle and word equations

Is it easy to distinguish between between the different oxidation states of copper? Why? I answered yes, because copper (I) is not as stable as copper (II), and there is a noticeable colour ...
2
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1answer
130 views

what is the difference between a redox reaction and an ionic bond? [closed]

I am new into chemistry... I'd like to know what the difference is between an ionic bond: which involves a bond with an electron transfert, and a redox reaction; which seems to be exactly the same to ...
3
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1answer
216 views

Why does Silver Sulfate not appear to precipitate from a reaction?

Aqueous silver nitrate is mixed with aqueous sodium sulfate. We were asked to perform this reaction in lab in my chemistry class, and we did not observe a precipitant being formed. However, the ...
4
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2answers
258 views

Water: What to use H3O+ or H+? [duplicate]

Why can we use $\ce{H+}$ and $\ce{H3O+}$ interchangeably? I have seen in many places that first the reaction is written including Hydronium ion but then in bracket its written that we can write it as ...
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143 views

Equilibrium Constant for: NaF + HCl -> NaCl + HF

Since HCl is more acidic than HF, the left hand side of a reaction has a stronger acid than the right hand side. Since NaF is more basic than NaCl, the left hand side has a stronger base relative to ...
0
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1answer
1k views

Intermolecular Forces for Ionic Compound?

So in class we have learned London dispersion, dipole-dipole, ion-dipole and hydrogen bonding for intermolecular forces. Our teacher always uses covalent molecules as examples. So I was wondering ...
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64 views

Chemical bond at Aluminum / Aluminum oxide interface

I am trying to find out what chemical bond holds aluminum oxide to the aluminum on which it forms. The only information I was able to find on the internet was in a Google book which suggested that the ...
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1answer
61 views

Calculating solubility in water with other species present

I'm very confused about calculating solubility. Everything is in temperature of $298\ \mathrm K$ From Atkins's book, exercise 16.83: Based on solubility constant, calculate solubility of ...
3
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1answer
217 views

Why do elements change their colour in reactions?

We are almost common with the reaction: $\mathrm {CuSO_4+Fe = FeSO_4+Cu }$. In this reaction initially Copper sulphate is bluish in colour, which gradually changes to pale green. I want to know, why ...
2
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0answers
135 views

Few basic questions about ionic bonding and batteries (lead)

I've got a few very very basic questions about ionic bonds and their role in batteries. My assumptions (correct me if I'm wrong): Ionic bonds occur between a metal and a non-metal (the non-metal ...
4
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3answers
394 views

Produce CuCl2 from CuSO4

I have a large amount of copper sulfate available and I am interested in obtaining copper chloride from it. What is the easiest way to do so? I have considered mixing an aqueous solution of copper ...
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1answer
47 views

When Compounds are Considered Compounds and Their Types [closed]

I'm a bit new in chemistry, so I need help with a couple of things. Although I don't mind complicated answers, please try to keep it around high school level, and not rocket science. Thanks! Can ...
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82 views

Carbides of different elements

What property of the elements makes them forms different types of carbides like: $\ce{Be}$ and $\ce{Al}$ - $\ce{Be2C}$ and $\ce{Al4C3}$ (Methanides) contains $\ce{C^4-}$ ion $\ce{Na}$ and $\ce{Ca}$ ...
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46 views

Shapes of ionic compound

Can anyone explain the shapes of ionic compounds? What does it mean? What does the coordinate number mean? I know that in $\ce{NaCl}$, one $\ce{Na}$ atom is surrounded by 6 $\ce{Cl}$ atoms, and vice ...