The bond energy for HBr is 363 kJ/mole. What is the longest wavelength (in nm) that can dissociate a molecule of HBr? If a photon of 184 nm is used, what is the excess energy (in J) over that needed for dissociation? If this excess energy is carried away by the H atom as kinetic energy, what is its speed (in m/s)?

Q: By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with…

A:

Q: Question 3: What is the best reason for the observation that carbon can form four bonds and no more?…

A: There is a rule in Chemistry called the Octet rule. An atom is most stable when it has a full…

Q: Selenium tetrafluoride is produced from a reaction of elemental Se with chlorine trifluoride…

A:

Q: The dissociation energy of a carbon–bromine bond is typicallyabout 276 kJ/mol. (a) What is the…

A: a. The amount of energy (E) required to break a single C — Br bond is calculated by the formula,

Q: The O—O bonds in ozone can be described as “one and a half bonds.” Does thissuggest that the bond…

A: Bond order is the number of bond that are formed between two atoms. Example: Bond order of nitrogen…

Q: measured by determining the wavelength of ultraviolet photons needed to cause a covalent bond…

A: The energy required to break one mole of same type of bond is called bond dissociation energy or…

Q: For the reaction: ClOOCl + light → ClOO +Cl, the wavelength of light needed to initiate the reaction…

A:

Q: The compound oxygen difluoride is quite reactive, giving oxygen and HF when treated with water:…

A: We have OF2(g) + H2O(g) → O2(g) + 2HF(g) ΔE°rxn = –318 kJ

Q: The bond energy of C2 is 599 kJ/mol, the bond distance is 110 pm. Take a rough estimate of the…

A: Bond Energy is the average bond enthalpy of the bond which explains the strength of the bond.

Q: To explain why AHan for RbCl is different than that for KCI, the student investigates factors that…

A: The ionic size increases from top to bottom in a group and decreases from left to right in a period.…

Q: Hydrazine, N2H4, burns in oxygen as follows: N2H4   + O2     →    N2   +   2H2O    [The bond…

A: Given reaction: N2H4 + O2→N2+2H2O

Q: Aluminum oxide (Al₂ O₃) is a widely used industrial abrasive(emery, corundum), for which the…

A: The hardness of  Aluminum oxide implies about the magnitude of the lattice energy has to be…

Q: (ii) Construct and label a Born-Haber cycle for strontium difluoride, SrF2. Calculate the lattice…

A: The Born-Haber cycle helps us to analyze various energies in a reaction. We can write the Born-Haber…

Q: 1. Neutrons as well as electrons and x-rays can be used to obtain information about molecular…

A: Given typical bind length = 1.54 A° . So wavelength of neutron = one fifth of bond length = 1.54/5=…

Q: The ionic compound CaO crystallizes with the same structureas sodium chloride (Figure 8.3). (a) In…

A: a. The crystalline structure of sodium chloride (refer Figure 8.3 in the book) has six Cl ions in…

Q: Fructose, C6H1206(S), consists of 5 C-C single bonds, 7 C-O bonds, 7 C-H bonds, and 5 O-H bonds with…

A: Given data,Bond energy of C-C=348 kJ/molBond energy of C-O=360 kJ/molBond energy of C-H=412…

Q: Determine whether the two structures in each of the following pairs represent constitutional…

A: We have to tell the relation between the given pairs whether they are constitutional isomer or…

Q: How can I use the Born Haber cycle to establish the lattice energy of CsCl (s) from the following…

A: Given:  ΔHf° [CsCl(s)] = -442.8 kJ/mol Enthalpy of sublimation of Cesium = 78.2 kJ/mol Enthalpy of…

Q: Use the Born-Haber cycle to calculate the lattice energy of KF. [The heat of sublimation of K is…

A: Given-> Heat of sublimation of K = 91.6 KJ/mole ∆Hf(KF) = -567.3 KJ/mole Bond enthalpy of F2 =…

Q: The bond energy of O2 is 498 kJ / mol. What is the maximum wavelength of the photon that has enough…

A: The energy of one mole of photons is = 498 kJ/mol The wavelength of the photon is =?

Q: (c) Draw the orbital diagrams and Lewis symbols to depict the formation of Na* and Cr ions from the…

A:

Q: Aluminum(IV) iodide (AII_(4)) cannot be formed. Explain why this is the case by making reference to…

A: Aluminum (IV) iodide cannot be formed due to unfavorable energetic considerations associated with…

Q: The structure of sodium hyaluronate, a sodium salt of hyaluronic acid used in skincare products for…

A:

Q: Some chemical reactions proceed by the in it ial loss or transfer of an electron to a diatomic…

A: a)

Q: The lattice energy of CaO(s) is -3,460 kilojoules per mole; the lattice energy for K2O is -2,240…

A: Lattice energy is the energy released when one mole of an ionic compound is formed. The lattice…

Q: Calculate the average A-B bond energy in AB3(g). AH for AB3(g)=-75.9 kJ/mol, AHF for A(g) = 288.9…

A: Given that -AB3 (g) --------------> A(g) + 3B(g)

Q: Without stratospheric ozone (O₃), harmful solar radiation would cause gene alterations. Ozone forms…

A: The bond energies values are not given. Hence, taken from internet for the references.

Q: The energy of a C-C single bond is 347 kJ/mol. What wavelength of light does a photon need to have…

A: Given: Energy of C-C single bond ( E ) = 347 kJ/mol = 347000 J/mol E = 347000 J/mol6.022×1023 E =…

Q: Given the following data, calculate the lattice energy of barium chloride, BaCl. IE 1BA= 502.7 kJ…

A:

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.