Please answer questions 1 2 3 4abc It2. Why can we ignore the disposition of the lone pairs on terminal atoms?3. What are the bond angles for a molecule having an octahedral electronic geometry with two lone pairsand four bonds on the central atom?4. Consider the structural changes that occur in the following molecules. Begin by drawing the bestLewis Structure for each of the following molecules.BH3CH4HFHNO'HH HH.a. What are the ideal bond angles for each structure, and which are expected to be distorted?b. For the ones that are distorted look up on the internet and record their experimental values here:c. According to Lewis and VSEPR theory, why do these changes occur?

since you have asked multiple questions, as per guidelines we will solved first three questions for…

Answered: 1. According to VSEPR theory, why are…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter12: Chemical Bonding

Section: Chapter Questions

Problem 41CR

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Part 1) If 3.36 moles of N2 and 3.90 moles of H2 are combined under, which would be considered the limiting reactant? Part 2) How many grams of NH will be formed during the reaction? Part 3) In sufficient detail, describe the most valid Lewis structure of NH3 (types of bonds, presence of unbonded electrons, existence of any formal charges etc.), then specify its molecular geometry. Based on the reaction to form ammonia (NH3
Use the molar bond enthalpy data in the table to estimate the value of Δ?∘rxnΔHrxn° for the equation C2H4 (g) + HBr (g) --> C2H5Br (g) Average molar bond enthalpies. (?bond)(Hbond) Bond ??⋅???−1kJ⋅mol−1 Bond ??⋅???−1kJ⋅mol−1 O−HO−H 464464 C≡NC≡N 890890 O−OO−O 142142 N−HN−H 390390 C−OC−O 351351 N−NN−N 159159 O=OO=O 502502 N=NN=N 418418 C=OC=O 730730 N≡NN≡N 945945 C−CC−C 347347 F−FF−F 155155 C=CC=C 615615 Cl−ClCl−Cl 243243 C≡CC≡C 811811 Br−BrBr−Br 192192 C−HC−H 414414 H−HH−H 435435 C−FC−F 439439 H−FH−F 565565 C−ClC−Cl 331331 H−ClH−Cl 431431 C−BrC−Br 276276 H−BrH−Br 368368 C−NC−N 293293 H−SH−S 364364 C=NC=N 615615 S−SS−S 225225
Use the molar bond enthalpy data in the table to estimate the value of Δ?∘rxnΔ⁢Hrxn∘ for the equation CCl4(g)+2F2(g)⟶CF4(g)+2Cl2(g)CCl4⁢(g)+2⁢F2⁡(g)⟶CF4⁢(g)+2⁢Cl2⁢(g) The bonding in the molecules is shown. Average molar bond enthalpies (?bond)(Hbond) Bond ??⋅???−1kJ⋅mol−1 Bond ??⋅???−1kJ⋅mol−1 O−HO−H 464464 C≡NC≡N 890890 O−OO−O 142142 N−HN−H 390390 C−OC−O 351351 N−NN−N 159159 O=OO=O 502502 N=NN=N 418418 C=OC=O 730730 N≡NN≡N 945945 C−CC−C 347347 F−FF−F 155155 C=CC=C 615615 Cl−ClCl−Cl 243243 C≡CC≡C 811811 Br−BrBr−Br 192192 C−HC−H 414414 H−HH−H 435435 C−FC−F 439439 H−FH−F 565565 C−ClC−Cl 331331 H−ClH−Cl 431431 C−BrC−Br 276276 H−BrH−Br 368368 C−NC−N 293293 H−SH−S 364364 C=NC=N 615615 S−SS−S 225
Part A) Consider the structural changes that occur in the following molecules. Begin by drawing the best Lewis Structure for each of the following molecules. BH3 CH4 NH3 H2O HF Part B)What are the ideal bond angles for each structure, and which are expected to be distorted? For the ones that are distorted look up on the internet and record their experimental values here: Part C)According to Lewis and VSEPR theory, why do these changes occur?
Consider the ff. Species, formation of which is favored at high temperatures?
Propylene, C3H6, is a gas that is used to form the importantpolymer called polypropylene. Its Lewis structure is given. (a) What is the total number of valence electrons in the propylenemolecule? (b) How many valence electrons are usedto make σ bonds in the molecule? (c) How many valenceelectrons are used to make π bonds in the molecule? (d) Howmany valence electrons remain in nonbonding pairs in themolecule? (e) What is the hybridization at each carbon atomin the molecule?
Consider the following Lewis structure where E is an unknown element: What are some possible identities for element E? Predict the molecular structure (including bond angles) for this ion. (See Exercises 115 and 116.)
Consider the following Lewis structure where E is an unknown element: What are some possible identities for element E? Predict the molecular structure (including bond angles) for this ion.
For each of the following molecules or molecular ions, give the steric number, sketch and name the approximate molecular geometry, and describe the direction of any distortions from the approximate geometry due to lone pairs. In each case, the central atom is listed first and the other atoms are all bonded directly to it. (a) TeH2 (b) AsF3 (c) PCl4+ (d) XeF5+
Why is the geometric structure of a molecule important, especially for biological molecules?
9.10 The kinetic energy of molecules is often used to induce chemical reactions. The bond energy in an O1 molecule is 8.221019J . Can an O2 molecule traveling at 780 m/s provide enough energy to break the O = O bond? What is the minimum velocity of an O2 molecule that would give a kinetic energy capable of breaking the bond if it is converted with 100% efficiency?
7.97 Consider the structure shown below for as well as any other important resonance structures. (a) What is the expected O—N—O bond angle in this structure? (b) The molecule contains N—O bonds of two different lengths. How many sborter N—O bonds would be present?

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