HW Solutions AP Ch. 10-11 - Ch. 10-11 Hon Chem HW #61 HC 1...

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Ch. 10-11 Hon Chem HW #61 HC 1 of 2 A1) Identify the most important types of interparticle forces present in each of the following solid substances. b) HCl c) HF d) CaCl 2 e) CH 4 f) CO g) NaNO 3 A3) Identify the most important types of interparticle forces present in the solids of each of the following substances. a) NH 4 Cl b) Teflon, CF 3 (CF 2 CF 2 ) n CF 3 #62 HC 1 of 6 A5) Which substance in each of the following pairs would have the greatest intermolecular force? a) CO 2 or OCS (C is central atom in both)
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b) PF 3 or PF 5 c) SF 2 or SF 6 d) SO 3 or SO 2 A7) In each part explain why one substance has a higher boiling point than the other. #62 HC 3 of 6 {Hint: intermolecular forces & sticking} a) n-pentane CH 3 CH 2 CH 2 CH 2 CH 3 36.2 o C neopentane 9.5 o C
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b) dimethyl ether CH 3 OCH 3 = (H 3 C—O—CH 3 ) -25 o C ethanol CH 3 CH 2 OH 79 o C c) HF 20 o C, HCl -85 o C d) HCl -85 o C, LiCl 1360 o C #62 HC 4 of 6 e) n-pentane CH 3 CH 2 CH 2 CH 2 CH 3 36.2 o C n-propane CH 3 CH 2 CH 3 -42 o C
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f) n-propane CH 3 CH 2 CH 3 -42 o C dimethyl ether CH 3 OCH 3 -25 o C A8) Which in each group has the given property? Explain. a) highest boiling point: HCl, Ar, or F 2 b) highest freezing point: H 2 O, NaCl, or HF c) lowest vapor pressure at 25 o C: Cl 2 , Br 2 , or I 2 #62 HC 5 of 6
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B1) The shape of the meniscus of water in a glass tube is different from that of mercury in a glass tube. Why? What is attracted/repelled to what? What would be the shape of the meniscus of water in a polyethylene tube? (polyethylene = CH 3 (CH 2 ) n CH 3 , where n = 1000 or so) C2) X-rays of wavelength 2.63 Ǻ were used to analyze a crystal. #63 HC 2 of 3 The angle of first order diffraction (n= 1) was 15.55 degrees. a) What is the interplanar spacing between crystal planes?
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b) Using the same values (including the answer from part “a”), what would be the angle for a second order diffraction? C11) The structures of some crystalline substances are shown below. Find the formula for each structure. a) b) (S in corners & faces, Zn in middle) #63 HC 3 of 3
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A9) Which in each group has the given property? Explain. #64 HC 1 of 7 a) highest boiling point: CCl 4 , CF 4 , or CBr 4 b) lowest freezing point: LiF, Cl 2 , or HBr c) smallest vapor pressure at 25 o C: CH 3 CH 2 OH, CH 3 OCH 3 =(H 3 C—O—CH 3 ), or CH 3 CH 2 CH 3
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Identify the interparticle force and the type of each solid. a) CO
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This note was uploaded on 02/09/2011 for the course CHEM 162 taught by Professor Jake during the Spring '11 term at Seattle Central Community College.

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HW Solutions AP Ch. 10-11 - Ch. 10-11 Hon Chem HW #61 HC 1...

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