Given the symmetry of methane (CH4), namely, that all four C-H bonds are equivalent to one another, what degeneracy do you expect to observe in its bonding and antibonding MO (in the HOMO and in the LUMO)? Explain your answer.
Given the symmetry of methane (CH4), namely, that all four C-H bonds are equivalent to one...
Part ACalculate the bond energy per mole for breaking all the bonds in methane, CH4.Express your answer to four significant figures and include the appropriate units.ΔHCH4 =1656 kJmolCorrectIn CH4, the energy required to break one C−H bond is 414 kJ/mol. Since there are four C−H bonds in CH4, the energy ΔHCH4 for breaking all the bonds is calculated asΔHCH4=4×bond energy of C−H bond=4×414 kJ/mol=1656 kJ/mol CH4 moleculesPart BCalculate the bond energy per mole for breaking all the bonds of oxygen,...
Let's regard the mighty methane molecule (CH4) as a rigid tetrahedron, with the C atom at its center, and CH bond lengths of 1.1 Å (a) Find the position of the center of mass of the molecule. (c) What is the moment of inertia about an axis which is one of the CH bonds'? (d) Show that the moment of inertia about either of the two perpendicular axes is the same. Thus the moment of inertia is independent of the...
Using a symmetry-based approach, construct a complete molecular orbital diagram for OH2. (a) Indicate the HOMO and LUMO. (b) Draw a representation of the HOMO and LUMO. (c) If one were to react this cation with another proton to give the dicationic species [H3O] + explain what would happen to the energies of the orbitals in the OH2 diagram after this reaction. Be specific about the key features regarding the M.O. diagram in the new cation. You do NOT need...
Quantum chemistry symmetry question #Hattenthecurve #lattenyourmarks 4 1. Consider ethylene C,H, which has a Ded symmetry group. We now want to change the symmetry group by cutting it in half (through the double bond) and substituting one half by a molecular fragment. C2H, CH? Find a substituent molecular fragment with less or equal to 6 atoms such that the symmetry group of the new molecule has the following symmetry groups as denoted in (a), (b) and (c)! You can be...
11. The molecule methane, representation of the four C-H bonds is formed T2 irreducible representation. How predict and Raman active C-H stretching vibratio 33 to the Ta point group (found below). The reducible our C-H bonds is formed from one A irreducible representation and one presentation. How many infrared active C-H stretching vibrations would you Raman active C-H stretching vibrations would you predict for CHA? (4 points) Character table for T, point group Esc, 3c, 6s, 600 A1 1 1...
please help in all sections asap! The following two drawings are resonance structures of one compound. a-o But the following two drawings are not resonance structures Not resonance structures They are, in fact, two different compounds. Choose the correct explanation(s). Select all that apply. Benzene does not have three C-C single bond and three C-C double bonds. In fact, all six C-C bonds of the ring have the same bond order and same length. Benzene have three C- single bond...
Methane (CH4) and oxygen (O2) react to form formaldehyde (CH2O) (reaction #1), with a competing side reaction (#2) in which methane and oxygen form carbon dioxide (CO2): CH4(v) + O2(g) -> CH2O(v) + H2O(l) (reaction #1) CH4(v) + 2O2(g) -> CO2(g) + 2H2O(l) (reaction #2) A fresh feed of an equimolar gas mixture of CH4 and O2 is combined with a recycle stream and fed to a reactor. The single-pass conversion of CH4 is 30% and the selectivity of CH2O...
please help in all sections asap!! Identify the reagents for each of the following transformations. Select all that apply. V -a HC=CNa MCPBA NaOEt H2O2, NaOH NBS, heat Conc. H2S04, heat OBH3-THF OH PCC, CH2Cl2 Conc. H2SO4, heat OBH3-THF HC=CNa MCPBA H2O2, NaOH NBS, heat HCCNa ОМСРВА H2O2, NaOH PCC, CH2Cl2 Conc. H2SO4, heat The following two drawings are resonance structures of one compound. But the following two drawings are not resonance structures Not resonance structures They are, in fact,...
image.jpgConsider 3,5 -dibromoheptane. On the templates below, fill in the atoms (H and Br) needed to draw all possible stereoisomers.Refer to your drawings by the numbers given to answer the following.a) Do any of these molecules have a plane of symmetry? If so, which ones?b) Are any of these molecules optically active? If so, which ones?c) Are any of these molecules equivalent? If so, which ones?d) Identify a pair of enantiomers.f) Identify a pair of diastereomers.
We are given four items, namely A, B, C, and D. Their corresponding unit profits are pA, pB, pC, and pD. The following shows five transactions with these items. Each row corresponds to a transaction where a non-negative integer shown in the row corresponds to the total number of occurrences of the correspondence item present in the transaction. T A B C D t1 0 0 3 2 t2 3 4 0 0 t3 0 0 1 3 t4 1...