37. (5 pts) Use the data given below to calculate the electron affinity of Br. AH(J)...
37. (5 pts) Use the data given below to calculate the electron affinity of Br. K(5) ► kg) K(g) → K'(g) + Br (1) ► 2 Br(g) K(s) + Br:(8) ► KB (8) KBr(8) ► K*(8) + Br(e) AH (1) +89 +419 +193 -394 +674 3 in the hydrogen 38. (5 pts) Calculate the wavelength of light associated with the transition from 1-2 to atom. 39. (2 pts) In the preceding question, would light be absorbed or emitted by the...
2 to n=3 in the hydrogen 38. (5 pts) Calculate the wavelength of light associated with the transition from n atom. 39. (2 pts) In the preceding question, would light be absorbed or emitted by the atom?
Student Class Number CHEMISTRY 1211 Chapter 9 Quiz DUE DATE: Thursday, 04/12 (BEFORE CLASS) Name (Last) (First) Section 72 (11:00-12:15 pm) Place answers in Answer Blank 1. Place the following in order of decreasing magnitude of lattice energy. (EXPLAIN K20 Rb2S Li20 A) Li2o K20 > Rb2:s B) Li20> Rb2S> K20 C) Rb2s > K20 > Li20 D) Rb2s > Li2o> K20 E) K20> Li20 >Rb2s Answer: Use the data given below to construct a Born-Haber cycle to determine the...
Recitation Exercise 9 CHEM 1411 Name Partners Instructor Day of Week 1. Given the equations: N2(g) + O2(g) → 2NO(g) AH = +180.7 kJ 2NO(g) + O2(g) → 2NO2(g) AH =-113.1 kJ 2N20(g) → 2N2(g) + O2(g) AH = -163.2 kJ Calculate the change in enthalpy for the reaction: N2O(g) + NO2(g) → NO(g) 2. An electron in a carbon atom makes a transition from n=2 to n=3. a) Does this transition require energy or emit energy? b) Can you...
Calculate the wavelength of light (in nanometers) emitted from a hydrogen atom if the electron is initially in the n=4 excited state shell and drops directly to the n=2 shell; that is, a 4→2 transition. You will need the value of the Rydberg constant which is 2.178 x 10-18 J, Planck's constant which is 6.626 x 10-34 J·s, and the speed of light which is 3.00 x 108m/s. a. 365 b. 487 c. 209 d. 337
2. (5 Pts) Use the table of bond ehthalpies found in your textbook to calculate AH for the following reaction: (You must balance the equation and show the bonding structures and calculations to receive credit.) H200) CO2(g)+ 3. (4 Pts) Draw all the resonance structures that follow the octet rule for SO? and show the formal charges on each atom.
2. (5 Pts) Use the table of bond ehthalpies found in your textbook to calculate AH for the following reaction:...
4. Use the equations and data below to calculate AE (in J), frequency (in s) and wavelength (in nm) for the following transition in hydrogen: Houter = 2 and Ninner = 1. Rydberg equation: AE = -RH Rydberg constant: RH = 2.18 x 10-18) 1 .2 ninner nuter) AE = hv Planck's constant: h = 6.626 x 1034 Js 2=c/v speed of light: C = 3.00 x 108 m/s (a) AE = (b) Frequency = (use the absolute value of...
Use the data in the table above to calculate an approzimate
delta H in kilojules for the synthesis of hydrazine from
ammonia.
Average Bond Dissociation Energies, D (kJ/mol) 151 - S-F S-C s-Be s-s 250 210 225 H-H 436 C-H 410 NH 3900 F 1801 H-C 410 C-C 350 N-C 300 0-C 200 H-F 570. C-F 450N -F 2700 -Br 210 H- 432 C-a 330 N-C 200 0-1 220 H Br 366 C-Br 270 N-Br 240 0-N 200 H-1 298...
3. (a) Use the data given below and calculate AHO, ASO, A Gº, and K, at 25° C for the reaction: 2 CO (g) + 2 CI, (g) → 2 COCI, (g) (b) Calculate AG for the reaction at 250 °C. (c) At what temperature (°C) is AG equal to zero? In what temperature range is this reaction product- favored? Compound He kJ/mol S. J/mol.K CO (g) -110.52 197.67 Cl2 (g) 223.07 COCI, (g) -218.8 283.53 4. Classify each of...
s(s) + 3/2 O2 (g) = SO3
15. (6 pts) Given the data below, calculate the ΔΗ,xn for the reaction: AH -296.1 kJ S (s) + O2 (g) → SO2 (g) 2SOs (g)