4) a) Provide a resonance structure that would help distinguish the chemical shifts of HA and HB HA HO HA HB HO Br D Br H На - со до it's more upfield. 8 slubolom molecule 1
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- 5. In an IR spectrum, the x axis represents wavenumber of the light being absorbed by bond vibrations. The wavenumber is (B) directly proportional to the frequency. (A) directly proportional to the wavelength. (C) inversely proportional to the energy of the wave. (D) None of the above.13) Identify the all vic halides Br Br CH2 CH₂ Cl 1 CI 01 MAP IJ II (5)|) ++) (^|--|) IN 1 (od 16PRO 811) FomenIn the electron paramagnetic resonance spectrum ofthe propyl radical, C3H5, the hyperfine splitting constant is1.45 mT for coupl ing to the protons on the terminal carbonatoms and 0.406 mT for coupl ing to the protons attached tothe central carbon atom. Taking 0= 2.25 mT, use the McConnellequation to estimate the unpaired electron density on eachcarbon atom.
- Predict the splitting pattern for each kind of hydrogen in isopropyl propanoate, CH3CH2CO2CH(CH3)2.or each of the following molecules, construct the MOS from the 2p, atomic orbitals perpendicular to the plane of the carbon atoms. (a) Cyclobutadiene HC=CH НС—СН HC=CH НС —СH (b) Allyl radical H H H H C=C •C-C, H C-H H C-H H H Indicate which, if any, of these orbitals have identical ener- gies from symmetry considerations. Show the number of electrons occupying each w MO in the ground state, and indicate whether either or both of the molecules are para- magnetic. Assume that the C atoms in the allyl radical are all sp? hybridized. Activate io to SWhich arrow indicates τxy?A. pointing rightB. pointing upC. pointing donw z lineD. none of the above
- Thank 6ou!Identify the orbitals that are used to form each indicated bond. Rank the indicated bonds in the order of increasing bond length. Orbitals: 2р-1s sp2-1s H-c=C- sp²-sp3 sp3-1s sp-1s sp-sp3 1s-1s sp-sp -H- sp3-sp3 | sp2-sp? H H Increasing bond length Reset I. I.Using average bond enthalpies (linked above), estimate the enthalpy change for the following reaction: 2C0(g) + 02(g) 2CO2(g)
- What is the ground state electron configuration for N? O (o1s) (01,*) (02,)° (02,*)*(x2,)*(02,)² 2р O (01,) (01,*)*(02,) (02,*)*(72,*)³ What is the bond order for N? bond order:Rank each of the following molecules in terms of increasing net dipole moment (i.e. smallest to largest). For your answer, simply place the atomic symbol for the central atom into the input field.Which of the following molecules is E configuration? HOH,C CH, HOH,C b. OMe NC CH, H3CO,C CH,Br H;CH,C CH,OH HOH;C CH CH3 a O b