Ionic Definition and 280 Threads

Homework Statement PbSO4(aq) >>> Pb(s) + PbO2(aq) + S042-(aq) Homework Equations The Attempt at a Solution PbSO4(aq) must be Pb2+(aq) SO42- But PbO2(aq) seems to have to be Pb4+(aq) + 2O-(aq) How can Pb go from Pb2+(aq) to Pb4+(aq); doesn't it have to keep the same charge?

I have thought the HCl is an ionic compound since it disassociates in water. However I read in my chemistry book that HCl is molecular. So what is it? Are all acids molecular or just the ones like HF, HCl, HBr, etc?

Homework Statement Write the balanced chemical reactions in ionic and neutral forms for: i) Enargite leaching by sodium bisulfide in basic solution to form chalcocite and thioarsenate. ii) Oxygen pressure oxidation of As2S5 in acid solution to form scorodite. Assume all sulfide sulfur forms...

Homework Statement The CsCl structure is stable when the ratio of the smaller ion radius to larger ion radius is ##r > 0.73##. Why is this so? Show that the packing fraction, ##p##, is given by $$p = \frac{\sqrt{3} \pi}{2} \frac{1+r^3}{(1+r)^3}$$ Homework Equations volume of sphere, volume of...

Thank you in advance for taking the time to read this thread. I'm putting together a program that computes the performance quality of power transformers for the company I'm working for. I'm in the process of writing down a description of the DGA (Dissolved Gas Analysis) of the oil in the...

Homework Statement I am currently teaching grade 11 chemistry, which isn't really my area. I am trying to find out, in general, whether ionic or covalent bonds are stronger. I am finding a lot of conflicting information online. Homework Equations The Attempt at a Solution Ionic substances...

When an object is exposed to radioactive substance then ionising radiation is released. So a mutation can be caused due to radiation but does the object exposed to radioactive substance form an ionic bond? If so how? I heard ionic bond can occur only between a metal and a non-metal.

The problem statement The solutions of ##NaC_2H_3O_3 + BaCl_2 +NH_4NO_3 + K_2CrO_4## are mixed together. 1. Write the Net Ionic Equation. 2. What is the driving force of the reaction? The attempt I'm not sure how to solve for the net ionic equation without a balanced equation. My...

I was wondering if Boron Trioxide was melted would it be ionic in the molten state? Boron is not normally ionic except for in some rather rare salts.

i want an explanation on how electron clouds interact or behave during the formation of an ionic bond. we know that complete transfer of electron/s forms an ionic bond but does the resulting charge differences naturally cause an attraction or is there a valid explanation behind this attraction...

Homework Statement Calculate the hydroxide ion concentration: 16.5 mL of aqueous sulfuric acid at 1.5 M added to 12.7 mL of sodium hydroxide at 5.5M. 2. The attempt at a solution H2SO4 (aq) + 2 NaOH (aq) <--> 2 H2O (l) + Na2SO4 (aq) Hydrogen Concentration: (16.5 mL / 1000) (1.5 M) =...

Homework Statement Write the name of the following compound CaO Homework Equations The Attempt at a Solution My book says that for oxoanions the ion with the greatest number of oxygen atoms has the suffix -ate and the one with the least amount of oxygen atoms has the suffix -ite...

Homework Statement Potassium chromate is an important compound of chromium. It is composed of K+ and CrO42-. Write the formula of the compound. Homework Equations positive charge + negative charge = 0 The Attempt at a Solution I know how to do this problem by cross switching the...

Homework Statement Use the concepts of electronegativity and polarisation to interpret the bonding in AgBr Homework Equations I have always understood electronegativity as the ability of an atom in a molecule to attract a pair of shared electrons towards itself. So this would usually...

1. I am a metal. My atomic radius is smaller than the atomic radius of the element with one fewer protons, but my +1 ionic radius is larger than the +1 ionic radius of the element with one fewer protons. Of the two elements in my group that have biological importance, I am the one with higher...

Is there a force between a particle of ionic compound? (such as salt) (image that I uploaded), I know that there are intermolecular force between atoms, molecules, ions but how about ionic compound? Thank you.

Homework Statement What is the net ionic equation for the reaction which takes place when HC2H3O2(aq) is added to NH3(aq)? Homework Equations The Attempt at a Solution I'm confused. How exactly does this thing break apart. Do I get N(acetate)3 + 4H+?

Homework Statement NaCl (a0 = 5.64A° ), NaBr (a0 = 5.98A° ) and KCl (a0 = 6.30A° ) all have the same structure, which is the NaCl structure. (a) Assuming the spacings are determined by the ionic radii of the relevant ions, what would value would you expect for the lattice constant of...

An intramolecular force is a force that holds atoms that form compounds or moleculues together. So if we have NaCl there are a large number of Na+ and Cl- so those ionic bonds hold the ions together so they are considered intramolecular. But say we have a mixture of molten NaCl and CaCl2 and...

Homework Statement Not really much of a problem - just a general question and some speculation on its answer. Why do some ionic compounds such as aluminum fluoride form hydrates while other ionic compounds such as sodium fluoride don't form hydrates upon being dissolved in solution...

When competing the ionic radii of Be+ and B+, which is smaller? I understand there are periodic trends but there is an anomaly in ionization energies b/w B and Be since B has a lone 2p electron. So instead of looking at periodic trends directly, I assessed the proton-electron ratio and found for...

Homework Statement Which of the following is a correctly written net ionic equation? http://i.minus.com/jYaipNE1rlRic.png Homework Equations Net ionic equation eliminate all spectator ions. The Attempt at a Solution It looks to me as if four of the answer choices are...

According to chemistry books the ionic and covalent bonds are a different thing. In covalent bonds the electrons share the same space around the bound nuclei, while in ionic bonds two ions are bound by the electric force between the ions. However, the truth is that the wave functions of the...

For example, if I am given something like HCl and NaOH, or ##HNO_3## and ##Ba(OH)_2##. Can someone explain how I would find the net ionic reaction or provide a link to a good tutorial on how to write the equation for the total/net reaction with only the reagents/reactants?

MgCl2 + Cu(NO3)2 I need the full and net ionic equations for this. I know NO3 is soluble and Cl is soluble too since there's no Ag, Pb, or Hg. Not sure how to write them out though.

In the compunds below, are the bonds most ionic or covalent? CH3-Mg-Cl (Grignard reagent), C-Mg bond [Ag(NH3)2]+ (Tollens' reagent), Ag-N bond Thanks John

A little clarification on the two... Would you agree with the text of the following two screenshots? (I highlighted the relevant parts in red) Most important is, screenshot 1 so please address it first: But also curious is, screenshot 2: Are these accurate? Would something...

Is BeF2 an Ionic compound?? Hi, Be is a metal & F is a non-metal. this means its an ionic compound made of cations & anions. Non-metals form molecular compounds which consist of molecules ( and molecules always contain covalent bonds). Now if BeF2 is an ionic compound, why does it have a...

Hi, In my book it says that it is difficult to determine the lattice energy of NaCl so they use the Haber cycle which applies Hess' law. Lattice is the energy change when a solid ionic substance separates into ions in gas phase. We could simply increase tempetrature until NaCl breaks down...

I recently heard of these ionic hair dryers. 1. what do they create ions of? how? if it is of hydrogen how does that not become hydrogen peroxide when it comes in contact with the water on hair? there is a new one with a digital reading how can it determine how many ions it produces? they have...

From this link: http://www.chemguide.co.uk/atoms/structures/ionicstruct.html it explains why NaCl has a 6:6 coordinated structure and not an 8:8 coordinated structure. However, i don't really understand their explanation "Now imagine what would happen if you replaced the caesium ion with the...

Homework Statement 1) Find the expression for the equilibrium interatomic distance as a function of A, n, and α 2) Determine the expression for the binding energy at equilibrium. 3) Calculate the constant n for NaCl, using the data from the Table 1.2 of Omar book and the fact that the...

Homework Statement Given the following thermodynamic data, calculate the lattice energy of CaBr2(s) caculate the lattice enegy: (A) Δ°Hf CaBr2(s) = -675 kJ/mol (B) Δ°Hf Ca(g) = 179 kJ/mol (C) Δ°Hf Br(g) = 112 kJ/mol (D) 1st ionization energy of Ca = 590 kJ/mol (E) 2nd ionization...

What I know is Molar conductivity is The conductivity of the elctrolyte divided by its concentration . Can someone please explain the physical significance of this ? Also ionic conductivity depends on concentration, if I dilute the electrolyte the ionic conductivity decreases but Molar...

Homework Statement What has more ionic character NaF or NaCl?Covalent? Homework Equations Measured Dipole moment of NaF 27.2e^-30 Measured dipole moment of NaCl 30e^-30 Dipole moment=qd Fractional ionic character=measured dipole moment/qd Equilibrium separation of NaCl =.236nm...

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 point so that the ionic compound evaporates? Will it still be free moving ions?

Homework Statement Which has the strongest ionic bond? Cs2Se AlN CaI2 Kbr Homework Equations Look at electronegativities The Attempt at a Solution I looked at electronegativities and found the differences. The largest difference was KBr. But apparently, that was wrong. See EN differences...

As i know chemical bonding can be considered as a spectrum of bond ranging from covalent to ionic. Now can we say that ionic bond is harder than covalent bond?? Since covalent bond is a result of attractive n repulsive bt ionic only attractive . If it does, instead of bond length factor, HF...

Homework Statement Find the total ionic (balanced) equation of the reaction of calcium hydroxide and phosphoric acid in aqueous solution. Homework Equations Solubility rules The Attempt at a Solution First, I balanced the reaction. 3Ca(OH)2 + 2H3PO4 --> Ca3(PO4)2 + 6H2O The...

Homework Statement Current passes through a solution of sodium chloride. In 1.00 second, 2.68*10^16 Na+ ions arrive at the negative electrode and 3.92*10^16 Cl- ions arrive at the positive electrode. What is the current passing between the electrodes? Final answer must be in milliamperes...

Why are ionic compounds hard and brittle ? For instance, an alloy is a mixture of 2 or more elements and thus does not break easily relative to original elements. Shouldn't the ionic compounds also be like the alloys ?

Hi, I have a question about ions formed during ionic bonding. Is this correct? "Sodium bonds with Chlorine to form Sodium Chloride (NaCl.) Sodium loses one electron & forms a positively charged ion and Chlorine gains one & forms a negatively charged ion." If this is correct, when they...

Homework Statement I was doing this problem for HW online, that asks to write the ionic equation for a reaction, but I'm completely stuck. After using all my attempts (i.e., I can no longer submit the answer even if it is right, :frown: ) I still couldn't get the right answer. We've only...

Homework Statement Write a balanced net ionic equation for the following chemical reaction Homework Equations Cr^{3+} + ___NH3 (aq) + ____H2O (l) → Cr(OH)3 (s) + ___NH4^{+} (aq)The Attempt at a Solution The balanced molecular equation is Cr^{3+} + 3 NH3 (aq) + 3 H2O (l) → Cr(OH)3 (s) +...

Hello. I'm having some trouble balancing ionic equations.. Are we supposed to consider the coefficients of the reactants/products? I came across a contradiction in the examples given in my book : 1) Na + H(+1) → Na(+1) + H2 So in order to figure out the oxidation/reduction part, we...

This question probably belittles the complexity of the issue, but I thought I'd ask anyway: Are there any reasonable methods by which the solubility of ionic compounds (e.g., KCl, NaBr, CaO, etc.) in ionic liquids (e.g., 1-ethyl-3-methylimidazolium tetrafluoroborate, tetrabutylammonium...

Homework Statement When writing chemical formulas in Mastering, indicate the physical states using the abbreviation , , or for solid, liquid, or gas, respectively. Use for aqueous solution. Write the total ionic equation (also known as the complete ionic equation) for the reaction of...

I am doing my revision and noticed that metals all have a molar heat capacity ~25 J/mol/K = 3R. Ionic solids such as NaCl and CaF2 however have different molar heat capacities. (~51 and 72 respectively) Why is this? there is no explination that my lecturer gave and I can't find it online but...

is it true that the ionic mobility increases with the decrease of the ionic size?

Hi there, I am reading Kittel's Introduction to Solid State Physics and I am quite wondering how the Madelung constant was derived for ionic crystal as in the example. In the book, he consider the repulsive potential of the form \lambda \exp(-r/\rho) and the interaction energy can be written...