(McQuarrie 5-15) The fundamental line in the infrared spectrum of 12 C160 occurs at 2143.0 cm-1, and the first overtone occurs at 4260.0 cm-1. Calculate the values of we and xewe for 12C160

Assume that the first line of the rotational spectrum (J = 0 → J = 1) of CO is 3.8424 cm-1. Calculate the length of the CO bond in picometer (10-12 m). To mark the answer, neglect the fractional part and do not write the unit. Information: mass of carbon: 12 c.u. mass of oxygen: 16 c.u. h = 6,6261 x 10-34 J.s   π = 3,1416 c = 2,9979 x108 m.s-1 N = 6,0221 x 1023 mol-1

Show COMPLETE solutions. Round-off FINAL answer to the 4th decimal The absorption coefficient of Sample Z at 340 nm is 600 Mol-1cm-1. What absorbance will be observed when light at 340 nm passes through a 1 cm cuvette containing 0.001M Sample zk A solution put in a 1.5 cm container transmits 55% incident light. Calculate the concentration of the solution, given that ɛ = 6x10-3 Mol-1cm-1. A solution shows a transmittance of 39.72%, when taken in a container measuring 3.5 cm thickness. Calculate its concentration, if the molar absorption coefficient is 3x10-2 Mol-1cm- 1.

3. If a hypothetic vibrational motion of a molecule can be described by Tvib = 2A1 + E, within the point group C4v, how many bands/peaks would you expect to see in its IR spectrum? Explain your reasoning. C, (4mm) E 2C, C, 20, 20. h = 8 1 1 1 1 x² + y', z2 A, 1 1 1 -1 -1 R_ B, 1 -1 1 1 -1 x² – y? B, 1 -1 1 -1 1 xy 2 -2 0 0 (x, y) (R, R) (zx, yz)

79 91 -1 The rotational spectrum of Br Br has lines 0.154 cm apart. Each line corresponds to a transition between adjacent rotational energy -10 levels. Calculate the bond length (in Å, where 1A = 10 m). Select one: О а. 1.61 O b. 0.228 О с. 2.28 O d. 0.161

The frequency of microwave transition from J-0 to J-1 for ¹2C¹60 is given as 3.845 cm l.Calculate the C-O bond distance using a rigid rotor model. (h=6.627x 1034 J.S, C=2.99x10³ m.s", NA=6.023x 10³). I = M. n²

2. The rovibrational absorption spectrum below corresponds to the V4 band of NH3. Use the wavenumbers of the visible lines in the zoomed region to determine the distance (in Å) of the hydrogen atoms from the principal (C3) axis. Note the lines are colour coded for AK. mN = 14.007 amu, m₁ = 1.008 amu. Q -R 1400 1500 1600 1700 1800 V/cm-1 AK = 0 AK = ±1 1623.75- 1627.00- 1630.25- 1636.44- 1642.64- 1649.14- 1645.89 1655.03- 1661.52- 1664.78- v/cm-1

In the infrared spectrum of 'H127I, there is an intense line at 2309.5 cm-1. Calculate the force constant of 'H127I. Use m = 1.008 u for H and m = 126.9045u for I.

The IR frequency of C=N in fac-[IrCl3(C=N):] is 2200 cm:1. Estimate the IR frequency of C=N_for fac-[IrF3(C=N)3] with an explanation.

Which of the following compounds is responsible for the data presented here? Waengh 25 26 27 25 29 12 14 IS 16 3800MOD 0 3000 2000 20 20 2000 IN0 1430 1300 1000 600 Wavemember os 28 37 35 M 8. 5 4 8 (ppm) frequency он HO. a. b. d.