Cl H H Cl 18 Use VSEPR theory and predict the geometry of each of the following

Cl h h cl 18 use vsepr theory and predict the

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ClHHCl
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1.8 Use VSEPR theory and predict the geometry of each of the following molecules and ions: (a) BH4-(c) NH4+(e) BH3(g) SiF4 (b) BeF2 (d) H2S (f) CF4 (h) :CCL3- (a)tetrahedral shape (b)linear geometry (c)tetrahedral shape (d)angular shape (e)trigonal planar shape (f)tetrahedral shape (g)tetrahedral shape (h)trigonal pyramid 1.9 Predict the bond angles of (a) F2C=CF2,(b) CH3CCCH3,(c) HCN. Answer: (a) FFFF120 o120 o(b) HHHHHH109.28 o180 o(c) 180 oNH1.10 There are actually three constitutional isomers with the molecular formula C3H8O. We have seen two of them in propyl alcohol and isopropyl alcohol. Write a dash formula for the third isomer. Answer: OCCHHHHHCHHH1.11 Outline the carbon skeleton of the following condensed structural formulas and then write each as a bond-line formula.
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(b)H3CCHH2CCH2OHCH3H3CCHH2CCH3CH3(c)H3CHCCH2CH3CH3(a)(d)H3CCH2H2CCH2CH3(e)H3CH2CCHH2CCH3OHOH(f)H2CCH2CCH3H2CCH3
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(g)H3CCH2H2CCH2CH3OO(h)H3CCHCH2CHCH3ClCH3Cl1.12 Which molecules in Problem 1.11 form sets of constitutional isomers? (a) ( CH3)2CHCH2CH3(b) (CH3)2CHCH2CH2OH(c) (CH3)2C=CHCH2CH3(d) CH3CH2CH2CH2CH3(e) CH3CH2CH(OH)CH2CH3(f) CH2=C(CH2CH3)2(g) CH3COCH2CH2CH2CH3(h) CH3CHClCH2CH(CH3)2Answer: sets of constituational isomers:(a) and (b), (b) and (e), (c) and (f)1.13 Write dash formulas for each of the following bond-line formulas: OClOHAnswer: CCCCCCOCCCCCCCCCCCCCCCCCOClHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH1.14 Write three-dimensional (wedge-dashed wedge-line) representations for each of the following:
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(a)CH3Cl, (b) CH2Cl2, (c) CH2BrCl, (d) CH3CH2Cl. Answer: CHHH(a)(b)CHClHCl(c)CHClHBr(d)CHHHClHHCl1.15 Which of the following ions posses the electron configuration of a noble gas? (a) Na+(c) F+ (e) Ca2+(g) O2-(b) Cl-(d) H-(f) S2- (h) Br+Answer: (a) Na+(e) Ca2+ (g) O2-(b) Cl-(d) H-(f) S2-These ions have the electron configuration of a noble gas. 1.16 Write Lewis structures for each of the following: (a) SOCl2(b) POCl3(c) PCl5 (d) HONO2(HNO3) Answer: SClClOPClClClClClNOOOH(a)PClClOCl(b)(c)(d)1.17 Give the formal charge<if one exits>on each atom of the following: H3CSCH3OOSOOOCH3SOOOH3COSOOO1.18 Write a condensed structural formula for each compound given here. (a) OH(b)
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O(c) (d) OHAnswer (a) (CH3)2CHCH2OH(b) (CH3)2CHCCH(CH3)2O(c) HCH2CCHCH2(d) (CH3)2CHCH2CH2OH1.19 What is the molecular formula for each of the compounds givenin Problem 1.18? Answer: (a) C4H10O (b) C7H14O (c) C4H6(d) C5H12O 1.20 Consider each pair of structural formulas that follow and state whether the two formulas represent the same compound, whether they present different compounds that are constitutional isomers of each other or whether they represent different compounds that are not isomeric.
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(a)ClBrandClBr(b)CH3CH2CH2CH2ClandClCH2CH(CH3)2(c)CHHClClandCHHClCl(d)CHFHCHHCHHCHHFand
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  • Atom, Electron, Lewis Structure, Ion, Chemical bond, Cl H H H C C H C H H H C C O C H H H C H H C H H C H H H C C H C H H C H C HH H H C C C H H H H H C C H C H C H H C C H H H

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