bond energy Definition and 31 Threads

Hi I'm trying to throw together a cool chart, I need the K constant so I can divide K/U to get the CM-1 measurement of every element for every bond type. I don't have any special tools for this, no force gauges. Does anyone have any idea how to at least roughly get an accurate depiction of...

Answer: The energy of a system with H and Cl atoms at varying distances can be represented by a curve that shows the potential energy of the system as a function of the distance between the two atoms. At very large distances, the potential energy is zero because there is no interaction between...

Mentor's Note: Post moved to homework forum from chemistry forum. Hello, I have a doubt in anexercise from MIT: -------------------------------------------------------------------------------------------------------------------------------------------- Calculate the maximum wavelength, λ, of...

Hello. Could someone please help me with this question about bond energy from an MIT course: "For two bonded atoms X and Y, a small X and large Y will result in a bond energy (E A-B) with a large __________ contribution." Thanks a lot if someone can help.

It is well known that sigma bond is stronger than Pi bond. However in bond energy table that C=O is 745 KJ and C-O is 358 KJ. we can calculate the Pi bond energy is 745-358=387! The Pi bond(387KJ) is stronger than sigma bond(358KJ) ? How could this happen?

Homework Statement Estimate the average S-F bond energy in SF6 The standard heat of formation values of SF6(g) , S(g) and F)(g) are: -1100, 275 and 80 kj / mol respectively. Homework Equations ∆H=∆Hf (products) -∆Hf(Reactants) S(g) +6F)(g) ------>SF6(g) The Attempt at a Solution I...

Homework Statement Compare bond energy of ethane/ene/yne 2. The attempt at a solution Comparing their acidity, ethyne has sp hybridized C so more polar CH bond, therefore H+ can be released easily. Therefore acidity order is ethyne>ethene>ethane which means CH bond is weakest in ethyne and so...

Homework Statement A bromo-methyl group is attached adjacent to the N,O and S atoms respectively in furan, pyrolle and thiophene, find correct order of bond energy required for heterolytic cleavage of CBr bond forming carbocation 2. The attempt at a solution Lone pairs participate in resonance...

Homework Statement [/B] (see attachments for example 2.9) Homework Equations [/B] The Attempt at a Solution As far as I have read and understood, most polymerizations (such as the one in this example) are exothermic. If this is the case, shouldn't this produce a negative (-) reaction...

I'm having trouble understanding the definition of bond energy. My textbook defines it as the energy required to break 1 mole of the bond in the gas phase. I don't understand what it means to break 1 mole of a bond. Cl2 (g) ---> 2 Cl(g) Bond energy = 243 kJ. Since 1 mole of Cl2 is 1.2*1024...

Edit: thread moved by mod from non technical forum, hence lack of the template. Using arguments from MO theory, state why the trends in homonuclear bond energies for rows 1 and 3 of the periodic table in graph D differ so markedly. S State, with reasons, whether Si or Ge has the higher...

The kinetic theory says that temperature is the measure of the average kinetic energy. That would mean then : The temperature rises with the rise in kinetic energy. We know that when matter changes state 'latent heat' helps in 'breaking the bonds' at the transition phase and that this 'extra...

"When we supply bond energy to two molecules that have bonded, the potential energy of the molecules increase causing the molecules to break bonds." -Is this the correct explanation regarding bond energy? If not, kindly explain this process to me, it's very confusing.

Homework Statement "By means of a balanced chemical equation, including state symbols, illustrate the term average C-H bond energy in methane." Ans: CH4 (g) -> C(g) + 4H(g) Average bond energy = +x/4 kj/mol Why C (g) ? Why is the state of C gas?

Hey guys, So, I was in my materials lecture today and something the lecturers and the tutors said was slightly confusing. We were talking about the repulsion and attraction force between atoms. This is all good as I can understand how if two atoms will repel each other if they get really close...

This is a question in "Chemical Principles, 6th Edition, Steven Zumdahl": Bond energy has been defined in the text as the amount of energy required to break a chemical bond, so we have come to think of the addition of energy as breaking bonds. However, in some cases the addition of energy can...

Homework Statement Steel has a theoretical strength of 4 x 10^10 Pa a density of 7860 kg/m^3, Youngs Modulus of 2 x 10^11 Pa and the mass number of iron, the main ingredient in steel, is 56. Calculate the bond energy of the steel using the expression for theoretical strength and surface...

Homework Statement Estimate the bond energy between two water molcules (liquid) in the following way A: From the density of water and its molecular weight calculate the average distance between the molecules B:hence show that there are 10^19 molcules per m^2 of surace C:from the...

I need some maths for a program to determine the exact (or as close as it can be mathed) bond energy of bonds from the first two rows of the periodic table S and P orbitals all the websites I can find tell you what the average bond energy for a specific common bond is but that won't do for...

Homework Statement 1st question:A voltaic cell is made up of mg2+/mg half-cell and fe3+/fe2+ half-cell. Which of the following statement are correct? a.addition of water to the fe3+/fe2+ half-cell has no effect on cell emf. b.increasing the temperature has no effect on the cell emf...

When scientists analyze proteins (chains of amino acids), often times light spectroscopy is used. Light is passes through a cuvet containing dissolved protein, and the absorption is measured. My question is: How do bonds absorb energy? What is the actual mechanism? I have been told that the...

Is the energy required to break the bonds of a compound in order for the reaction to occur (bond energy) the same as activation energy? Thanks for the help! :smile:

Homework Statement Enthalpies of fumaric and succinic acid are as follows: Fumaric: dH(combustion) = -1336kJ/mol C4H4O4(s) + 3O2 -> 4CO2(g) + 2H2O(l) Succinic: dH(combustion) = -1469kJ/mol C4H6O4(s) + 3.5 O2(g) -> 3H2O(l) Find the energy of the C=C bond BE: H-H: 432 kJ/mol...

Homework Statement C25H52 reacts in a combustion reaction. Calculate Bond EnergyHomework Equations The Attempt at a Solution the balanced equation would be C25H52 + 38O2 = 25CO2 + 26H2O 38 o=o bonds + 50 c-o bonds + 52 h-o...

Homework Statement Look at the diagram accompanying the question. Which has least C-H bond energy? The Attempt at a Solution On cleavage of a C-H bond, a carbanion is formed as carbon is more electronegative than hydrogen. So cleavage of (b) results in a carbanion stabilized by resonance

Is it true that the tripple bonds ahave higher energy than doubble bonds and doubble bonds have more energy than singlebonds? So if we were asked to arange the following bonds from highest energy to lowesst energy it would look like this: N---N (nitrogen- nitrogen tripple bond) C--O...

Homework Statement by means of a balanced equation, including state symbols, illustrate the term the average C-H bond energy in methane. The Attempt at a Solution i know what that all the C-H bonds in methane are not the same, and the mean of these bond energies give the average...

Dear all: I want to calculate the C-C bond energy of diamond and the dangling bond energy on diamond surface by DFT. How can I do? Can you tell me ? Thanks a lot! H. L. Yu :confused:

I've been searching far and wide and simply cannot find any info on the BOND ENERGY of a Fe- N coordinate-covalent bond, like that found in the heme group of haemoglobin. it looks like this: ... N ... | N -- Fe2+ -- N ... | ... N The Fe2+ ion also...

Dear all: Since bond energies in crystal are very important in say single crystal growth theory, and it seems very difficult to do such calculations. However, can someone give me some hints on this task, or if there is a perfect solution, please let me know. Sincerely Hongbin Zhang

if you have a chemical like C2H4 and you add Br2 to get the change in energy would you have to break every bond and add it up and then subtract something. If you do have to subtract something what would it be. The bond energy of each bond maybe.