5. The hydrogen bromide molecule, 1H79Br, has its strongest infrared absorption peak at 2550 cm¹ and its lowest-frequency microwave absorption peak at 500,540 MHz. a) Calculate the bond length of the HBr molecule in units of nanometers. b) Calculate the bond force constant in units of N/m.
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Give me the calculating steps thank you
the answer is
5. a) 0.143 nm
b) 379 N/m
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- 16.The frequency of vibration of a bond is a function of which two (2) factors?If the spacings between adjacent vibrational features in a photoelectron spectroscopy experiment decrease, changing by a factor of 1/2, when you deuterate the molecule being ionized, is it more likely that the orbital from which you are ejecting an electron is from a nonbonding orbital, a p orbital localized on a C-C or C-O bond, or a s orbital localized on a C-H bond? Explain.Chemistry Let ωCH be the angular frequency of the C-H bond stretching vibration observed in theIR spectrum of an organic molecule. (Note that angular frequency ω = 2πν). EstimateωC2H, the bond stretching frequency when 1H is substituted by 2H in the molecule.(Express ωC2H in terms of ωCH).
- (A) Explain why the spacings between the bands in the vibrational spectrum of a diatomic molecule would be expected to decrease with increasing vibrational quantum number. (B) Explain why a molecule with no dipole moment is microwave inactive but may show an infrared spectrum. (C) Explain the occurrence of P and R branches in the rotational fine structure of a vibrational transition of a diatomic molecule such as HCl or CO.what is the constitutional isomer for this spectrum? (C5h12O)Beta-carotene is an organic compound with an orange color. The diagram above shows the ultraviolet spectrum of beta-carotene. Which of the following statements is true about the absorption bands in the spectrum?(see attached image) a.) The absorption band between 250250 and 320 nm320 nm is due to transitions in electronic energy levels, and the absorption band between 380 and 520 nm is due to transitions in molecular vibrational levels. b.) The absorption band between 250 and 320 nm is due to transitions in molecular vibrational levels, and the absorption band between 380 and 520 nm is due to transitions in molecular rotational levels. c.) The two main absorption bands are associated with transitions in electronic energy levels. The band in the region corresponding to shorter wavelengths shows a lower absorbance than the band in the region corresponding to longer wavelengths. d.) The two main absorption bands are associated with transitions in molecular vibrational levels.…
- Which of the following statements is FALSE? a.) The absorptions in IR are attributed to transitions between rotational energy levels of the molecules. b.) The UV spectrum provides information about the valence electrons. c.) UV absorptions are attributed to electronic transitions. d.) NMR spectrometers use radio frequency energyWhich of the following statement is NOT true about IR absorption process? A molecule absorb only selected frequencies of infra-red radiation All bonds in a molecule are capable of absorbing infrared energy. Non-polar bonds are more likely to respond to IR radiation only i and iii only i only ii only ii and iii only iiiConsider a diatomic heteroatomic molecule AB. How many peaks does the microwave spectrum show and how many does the infrared spectrum show at room temperature? Reason briefly and adequately.
- 3 The rotation motion of HCl molecules can be analyzed by treating each molecule as a rigid rotational constant B= 2.07x10^-22 Joules. a) what frequency of radiation will excite the transition from the J=1 energy level to the J=2 level in this case? b) what is the relative probability of observing an HCl molecule at the J=2 energy level, as compared to teh J=1 level, at 25.00 degrees C?Does the absorption spectrum of the diatomic molecule HCl depend on the isotope of chlorine contained in the molecule? Explain your reasoning.This question pertains to the heteronuclear diatomic 1H19 Given that the bond length of 1H19F is 0.91 angstrom (1 angstrom = 10-10m), calculate the moment of inertia. Calculate the rotational constant (in J) for the diatomic in part a. Using your value for the rotational constant in part b, determine the energy of the transition from state 3 to state 4 (in J). Do you expect the energy of the transition from state 3 to state 4 for 2H19F to be larger or smaller than what you computed in part c, assuming that the bond length does not change? Explain your choice based on the relevant equations, or calculate the energy for this transition. Steps 1, 2 and 3 have already been found. I need help with the last question only but I haven't been able to get it solved since there can only be three questions answered. The following answers for step 1-3 are below. 1. moment of inertia = 1.30 × 10-47 kgm2 2. rotational constant = 21.5 cm-1 3. Energy required from transition n= 3 to n= 4 is…