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- Consider the reactions of silver metal, Ag(s), with each of the halogens: fluorine, F2(g), chlorine, Cl2(g), and bromine, Br2(l). What chapter data could you use to decide which reaction is most exothermic? Which reaction is that?Two particles with charges ?1q1 and ?2q2 are separated by distance ?.d. Arrange these scenarios according to the magnitude of the electrostatic (coulombic) potential energy. Ignore sign.At large interatomic separations, an alkali halide moleculeMX has a lower energy as two neutral atoms, M + X; atshort separations, the ionic form (M+)(X-) has a lowerenergy. At a certain distance, Rc, the energies of the twoforms become equal, and it is near this distance that theelectron will jump from the metal to the halogen atom during a collision. Because the forces between neutral atomsare weak at large distances, a reasonably good approximation can be made by ignoring any variation in potentialV(R) for the neutral atoms between Rc and R - `. For theions in this distance range, V(R) is dominated by theirCoulomb attraction.(a) Express Rc for the first ionization energy of the metalM and the electron affinity of the halogen X.(b) Calculate Rc for LiF, KBr, and NaCl using data fromAppendix F.
- 10. Calculate the energy for vacancy formation in copper, given that the equilibrium number of vacancies at 1000° C (1273 K) is 2.2 x 1025 m³. The atomic weight and density (at 1000° C) for copper are, respectively, 63.5 g/mol and 8.4 g/cm³. Where: IIIIII - N₁ = Nexp exp(-X). KT N Q T N = N₁ P/Ncu is the total number of atomic sites. is the energy required for the formation of a vacancy is the absolute temperature in kelvins k is the gas or Boltzmann's constant = 8.62 x 105 eV/atom-K. NA is Avogadro's number 6.022 x 1023 atoms/mol P is the atomic density New is Atomic weight for copper. 2(a) Draw the Lewis structure for hydrogen peroxide, H2O2.(b) What is the weakest bond in hydrogen peroxide? (c) Hydrogenperoxide is sold commercially as an aqueous solution inbrown bottles to protect it from light. Calculate the longestwavelength of light that has sufficient energy to break theweakest bond in hydrogen peroxide.in ne taist ME He Pa Example 4. Why do the transition elements exhibit higher enthalpies of atomisation? ( DA Try percet HO
- Consider these ionic oxides present in our planet: Na,0, Cao, K20, Al,O3, MgO Arrange them in order of decreasing internal potential energy (increasing energetic stability). (least stable most stable) A. Na,0 > Cao > K2O > Al,O3 > Mgo B. Al,0, > Cao > K20 > MgO > Na,0 C. Al,0; > K20 > Na,O > MgO > Cao D. Cao > MgO > K20 > Na,O > Al¿O3 E. K20 > Na,0 > Cao > Mgo > ALO3In the table below, there are sketches of four crystals made of positively-charged cations and negatively-charged anions. Rank these crystals in decreasing order of stability (or equivalently increasing order of energy). That is, select "1" below the most stable (lowest energy) crystal. Select "2" below the next most stable (next lowest energy) crystal, and so forth. A B alo Ar (Choose one) (Choose one) C ** +2 (Choose one) (Choose one) Explanation Check © 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use| Privacy Center | AccessibilityConsider the following data for osmium: g 190.23 mol atomic mass electronegativity 2.20 kJ 106.1 mol electron affinity kJ 840. mol jonization energy kJ 31. mol heat of fusion You may find additional useful data in the ALEKS Data tab. Does the following reaction absorb or release energy? O release absorb (1) Os (g) Os(g) + e O Can't be decided with the data given. yes Is it possible to calculate the amount of energy absorbed or released by reaction (1) using only the data above? O no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): |kJ/mol Does the following reaction absorb or release energy? O release O absorb (2) Os(g) + e + Os (g) Can't be decided with the data given. yes Is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? no If you answered yes to the previous question, enter the amount of enerav absorbed or released bv reaction (2): |kJ/mol
- Estimate the change in enthalpy (delta H) for the dissociation for HCl(g) into H+(g) and Cl-(g) Ionization energy for H 1312 kJ/mol Electron affinity for H (-72.8 kJ/mol) Ionization energy for Cl 1251.2 kJ/mol Electron affinity for Cl (-349 kJ/mol)The following figure shows the schematics of the energy and electronic distribution of the carbon monoxide molecule, while the diagrams of the positive and negative carbon monoxide ion are incomplete. What is required is to choose one or two more stable cases out of these three cases, after completing the two diagrams. CO CO 0201 ozp ₂px ₂py N 02P² N 12px N 028 N 025 2py CO b CO C Co d CO = CO 2py 02pz N 12px N 12px 025 025 zpy 2px 5/2 CO First Azpy N 02P: N 2py N 0256f. What element is the electron configuration for Cl- isoelectric with? g. What trend in electronegativity occurs as you go down a group on the periodic table? Explain why this occurs. h. Write four quantum numbers to describe the highest energy electron in the Cl atom. The answer must include the four symbols and four correct numbers. Please answer all parts of question.