Interpretation: The complete Lewis structure for histidine in which all the bonded atoms must have zero formal charge needs to be determined and bond angle of C1-N2 in the given figure needs to be shown.
Concept Introduction:
Lewis dot structure is the representation which shows the bonding between atoms present in a molecule. It shows lone pairs and bond pairs that existing on each bonded atom. Lewis dot structure is also known as Lewis dot formula or electron dot structure.
Formal charge on each atom can be determined with the help of number of valence shell electrons, number of lone pair electrons and bond pair electrons. The formula for the formal charge can be written as:
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Chapter 13 Solutions
Chemical Principles
- Thionyl chloride (SOCl₂) is a sulfur oxohalide used indus-trially to dehydrate metal halide hydrates. (a) Write a balancedequation for its reaction with magnesium chloride hexahydrate,in which SO₂ and HCl form along with the metal halide. (b) Drawa Lewis structure of SOCl₂ with minimal formal charges.arrow_forwardAcetylene 1C2H22 and nitrogen 1N22 both contain a triplebond, but they differ greatly in their chemical properties.(a) Write the Lewis structures for the two substances. (b) Byreferring to Appendix C, look up the enthalpies of formationof acetylene and nitrogen. Which compound is more stable?(c) Write balanced chemical equations for the completeoxidation of N2 to form N2O51g2 and of acetylene to formCO21g2 and H2O1g2. (d) Calculate the enthalpy of oxidationper mole for N2 and for C2H2 (the enthalpy of formationof N2O51g2 is 11.30 kJ>mol). (e) Both N2 and C2H2 possesstriple bonds with quite high bond enthalpies (Table 8.3).Calculate the enthalpy of hydrogenation per mole for bothcompounds: acetylene plus H2 to make methane, CH4;nitrogen plus H2 to make ammonia, NH3.arrow_forwardDraw the Lewis structures for each of the following ionsor molecules. Identify those in which the octet rule is notobeyed; state which atom in each compound does not followthe octet rule; and state, for those atoms, how manyelectrons surround these atoms: (a) PH3, (b) AlH3, (c) N3-,(d) CH2Cl2, (e) SnF62-.arrow_forward
- Which of the following substances in each per will be the most reactive in SN2 reactions? justifyarrow_forwardcalculate the heat of reaction using Bond energy method for the complete combustion of buthane (C4H10). water vapour and carbon dioxide are produced in the reaction, include a thermal chemical equation.arrow_forwardAutoSave Module 4; Lewis Structures of Covalent Compounds - Saved to this PC P Searc Off File Home Insert Draw Design Layout References Mailings Review View Help Grammarly Times New Roma v 12 A A Aa v AaBbCcI AaBbCcI Aa Paste в IU ab х, х* А A I Normal I No Spac.. Hea Clipboard Font Paragraph 4..| 5 9... |·· 10. . |. 11. ..| 12. . | 13... 14. 15. * The speaker uses the term "lone electron pair" instead of non-bonding electron pair. It is the same thing. **Number VESPR Groups is equal to the number of atoms bonded to the central atom plus the mumber oaf ncn-bonding pairs. Draw the Lenis structure Name the shape. ihoning the correct :kape. LUse element symbols, dots for ncn- bonding electron pairs and dashes for banded electrons. BeCl, со. HCN BF, CH.O so, CH, NH, Number of VESPRarrow_forward
- stion 7 of 41 > Use the molar bond enthalpy data in the table to estimate the value of AHan for the equation Average molar bond enthalpies. (Hpond) Bond kJ. mol- Bond kJ . mol- CCI,(g) + 2 F,(g) → CF,(g) + 2C,(g) O-H 464 C=N 890 The bonding in the molecules is shown. 0-0 142 N-H 390 С-о 351 N-N 159 +に+章 F-F C-CI O=0 502 N=N 418 CH C=0 730 N=N 945 F-F C-CI С-С 347 F-F 155 C=C 615 Cl–CI 243 C=C 811 Br-Br 192 С-Н 414 H-H 435 С-F 439 Н-F 565 C-CI 331 H-Cl 431 С-Br 276 Н-Br 368 С-N 293 H-S 364 C=N 615 S-S 225 AHn = kJ Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemsitry| Publisher: University Science Books S A «tv MacBook Air 80 DII DD F3 F8 F10 F11 F12 F4 F5 F6 F7 F9arrow_forwardPropylene, C3H6, is a gas that is used to form the importantpolymer called polypropylene. Its Lewis structure is (a) What is the total number of valence electrons in the propylenemolecule? (b) How many valence electrons are usedto make s bonds in the molecule? (c) How many valenceelectrons are used to make p 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?arrow_forward7) the Use the bond energies tabulated in Table A4.1 of the textbook to calculate the enthalpy of reaction AH; for each of the following chemical reactions. as CO₂(g) + H₂(g) → H₂O(g) + CO(g) w tz(wists at 2ndmas bent nowpon /wendo um bomot Stasid of 21+1 LAN ww] justed ridonta abrangues with torking at buwa so MON 122660 On Salow buttons to tumot & CAWOO + Seks b. N₂(g) + O₂(g) → 2NO(g) Twit to SHA SH 26 m2 sit tosstows se • stawbong stt to HA mosarrow_forward
- What are the formal charges on the sulfur (S), carbon (C), and nitrogen (N) atoms, respectively, in the "best" or most realistic Lewis structure shown below? The possible Lewis structures for the thiocyanate ion, SCN, are S=c=N] $-c=Ñ]' [:s=C-N;T Structure A Structure B Structure C Express your answers as integers separated by commas. • View Available Hint(s) formal charge on sulfur (S), carbon (C) and nitrogen (N) atoms = Submitarrow_forwardEthanol (CH₃CH₂OH) is being used as a gasoline additiveor alternative in many parts of the world.(a) Use bond energies to find Hrxnfor the combustion ofgaseous ethanol. (Assume H₂O forms as a gas.)(b) In its standard state at 25°C, ethanol is a liquid. Its vapor-ization requires 40.5 kJ/mol. Correct the value from part(a) to find the heat of reaction for the combustion of liquid ethanol.(c) How does the value from part (b) compare with the value you calculate from standard heats of formation?(d) “Greener” methods produce ethanol from corn and other plant material, but the main industrial method involves hydrating ethylene from petroleum. Use Lewis structures and bond ener-gies to calculate ΔH°ᵣₓₙ for the formation of gaseous ethanol from ethylene gas with water vapor.arrow_forwardWhich of the following substances is/are bent? (i) H2S, (ii) CO2, (iii) BRNO, (iv) NH2, (v) O3 (i) and (v) O (). (ii), (iv), and (v) O (). (ii), and (v) O only (iii)arrow_forward
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