E2KEYformA - K Mont'3 arm Spring ZOOS—Exam 2—form A 67...

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Unformatted text preview: K Mont/'3 arm Spring ZOOS—Exam 2—form A 67 1. \‘C-‘Thich of the following is best described as an ionic compound? a. CO. 1). CF; Cassia!" 939 of anarchic. c. l—IZSe d. CJLO- (“as (25* S V '2. VWhich of the following anions has a —3 charge? . 1,- a. carbonate ion co; b. acetate ion M3600- @ nitride ion ”3" d. sulfate ion 597‘, e. aluminum ion I413" 3. The ion formed when a neutral nickel atom loses two electrons is WHEN—flu— @ w— M” m b. Niz' Ig‘ 2'“ c. isoelectronic with argof . -. - - - - 2* 3"-P d. isoelectronic With iron (II) ion & 39¢ e. More than one of the above answers is correct. 4. The formula weight of vanadium (III) fluoride is about .. T0 r l. 4* "" a 3 g/ mo V?» F VF; b. :0 g/mol. c. 78 g/mol. 5.0 ng @ 108 g/mol. 4” 3 (13998) e. 172 g/mol. I07. ”gym! 5. Ionic bonds result from a. overlap of .r orbitals. b. overlap of f) orbitals. Q transfer, rather than sharing, of electrons. d. bonding interactions between elements with similar electronegativitv values. e. sharing interactions between two or more elements that have high electron affinities. 6. Calcium hydrogen carbonate has the formula * a. (fiasco2 c...“ #4303 b. Ca2P1C( )2 @ cameo.)2 Cal—(MOS); d. camgcok e. cameos. 8. 10. 11. 12. {ml/951‘ daJrnnyam-lriui‘, lill'lhlcl'l of the following bonds is least polar? 25 3.; 21. (9 c. d. e. C—O C—H C—F H—Cl 2-1: 24% 161% 23 6-1! 2-5 «to 1.1 3.0 Hag 1.! 3.0 Strontium phosphate has the formula: 3139002 69 b. c. d. 6. Bravo. srPo. Sffposlz SrCPOijg AWum . 5r} (1" 9:1); Based on the observed general trend, which shows the correct order for increasing ionization energy? c1 ngl, r» «me: Q h. c. d. e. Rb Cl Rb Cr Cl < < < < < Cr < P < Cl < Rb < Cr < P < Cr < P < C] < P < Rb 10”” Cr “f '17) What is the oxidation number of chlorine in the hypochlorite ion, (310'? I}! a; 0M1! I} {0’7 whiz; "L CL 4- 6-1)” "I Q, change, on an“ FM 21. 5) c. d. 6. —1 0 +1 +2 +3 0.14 3.5 14 10 0.29 fl pawl ‘6. 4*! Suppose you have 98 g of diatomic nitrogen. How many moles would this be? [ant/fl!“ my MGM-r" '3 1C5“, m“ “It in my”. “I: 419M law Rb C, a", "m..'/,"M¢, ¢ The total number of valence electrons involved in the Lewis structure of the bromate ionX13rO'\{ a. b. C. 6. 18 24 25 26 32 7 3L6) ' 2.6 kHz/cam 13. 14. 16. 17. V»‘\’--'71"1icl"1 description best fits the bonding in lithium carbonate? £045 I‘M C “i 0 any and“? Q The compound is an ionic compound containing a covalentlv bonded carbonate ion. b. The compound is an ionic compound containing no significant covalent bonding. c. The compound contains two ions covalently-*bonded together. d. The compound is 100% covalently bonded. e. All bonding in this compound is ionic. A molecule will be described as bent if ha}.pyrm:u / I. The central atom has 4 charge clouds of which one is a lone pair of electrons. II. The central atom has 3 charge clouds of which one is a lone pair of electrons", III. The central atom has 4 charge clouds of which two are lone pairs of electrons. / k. a. I o u b. II it. ‘8 Til “8 e39 502' észg: c. I and III . '2' -- Q 11 and III E. {4,3 my #30 :04! e. I, II and III I ’ 0 1/ What is the total number of valence electrons involved in the Lewis structure of a molecule of diphosphorus pentoxide? a0; a. 8 f b- 16 2m + 51.4) == 40 5:; :3 £0, a Krmm e. 70 W-‘Thich of the following will react with calcium hydroxide to produce calcium sulfate in a nflltglll'zgtifln reaction? C40”); 60.50:} 3- \* wt . W...» M 4, W ). .a . 2 c. Ca(N03j2 #3509 J“ Maggy,» we? 4' #10 d. PINK). ”-1- 44.” I‘M M“ 4m .. st0+ 0)! I) mm_ 34", 0% ”on! K 5092 .1 Balance the following chemical equation. we3 + 3 H2 W + 3H20 flay VWhen correctlv balanced, the oefficient in front of l-{ist a. 1 T M W: 5-bit, C? 2 :31" U d. 6 I l ‘M e. none Ufthe above Mk: we, :3 4h “44’fo «9m . 18. 19. 20. 21. 22. 23. In the reaction shown in Question 1'7, tungsten in \‘C-TOB is @ b. c. d. 6. being reduced to form elemental WT metal being oxidized to form elemental WT metal the reducing agent a and c bandc The number of hvdrogen atoms in 25 moles of sulfuric acid is about: a. b. C. 25 1.5 x1025 0 3.0 x 1025 6. 1.1 x 1026 50 L2 51ml ”2.599(0 “mum“, Agog ZAwabmfi m; 123,509 Molecule—42,509 a 2.0 x 1102'; H dams ‘N'Thlcl'l of the following exists as a diatomic molecule and contains onlv a single bond? “El. . osj-Tgen C}: 3‘5. nitrogen fluorine a and b b and c a. a .é ~41“ M/EA/c‘ Cobalt (II) phosphide has the formula: do” p3." a. b. c. d. Q CoP Cogl’ Col)2 CogP?’ Coal)2 c038,. ‘N'Thlcl'l of the following behaves as a base when dissolved in water? ken” (111.911an add for: aandb M I} am alfiob/ (MUM; Lafll’yj “El. b. C. 6. Ca(Ol-I )2 1/ CsOl—I '/ bandc VWhen a valid Lewis structure can be drawn more than one wav for an ion or molecule, as in the case of sulfur dioxide, the true structure is a. b. c. d. the structure where u : 0 the structure where u == 0. determined by correct application of the octet rule. alwavs the structure where loss of electrons has resulted in formation of a positive ion. an average of the possible resonance structures. W H '24. V»‘\’--'71"1icl"1 compound is expected to have a melting point > 3000C? a. BM fowl, cfljwk And-b (E? SrBre ”M" ”9, ”WM a; ~éoo wim’é c. 502 d. POCL} e. SeCl2 25. Draw the Lewis structure ofN20. Nitrogen is the central atom: N—N—O, not N—O—N. W hen correctlv drawn there are_ lone pairs on the central atom and the shape of the molecule is ' ”3’0 I‘ a, will vii/~53 acid-s “r 2.9., 109.; Q 0, linear " " “ W I l). U, trigonal planar «7633/ ”‘0". QfiJt-ls |‘/’ [2' Q, g“ c. 0, bent " I d. 1,l)ent flfiflfia “41’“! / l‘e’ y“ e. 2, bent " AB Mica»: no 4-19 on w - , . i - . _ 1. Use the followmg molecule for the next three questions, 26 23. #M ”I H —<|:= —g I: :fit‘ K3 nature} 26. How many lone pairs reside on halogens in this structure? a. 4 6’ 6 c. 8 d. 10 e. 20 27. What is the approximate C—C—C bond angle? a. 45° 3 “5‘ °" ‘5 1). 90° c. 109° (3.) 120° e. 180° 28. W-‘That is the approximate C—O—Cl bond angle? a. 45° floa‘c -’ 2.. Zena fu'rs on ”75;,“ g; is; as ,e; d. 120° {rim—r- {368Q CL e. 180° '29. VGl-‘Thich of the following molecules has [i : 0? a. BeClg 0 a C59 A32, b. (:02 g (“:1 ,__.. gawc’p C. l3‘l‘];j ,I‘ l I ’ @ all have u = 0 fit— I 8‘” +3 ’0wa e. none have u. = 0 1'? [53¢ fflb I" of! ag, Use the balanced reaction below for questions 30 - 33: 4101., +302 —:v 2N2 +6l120 30. How many moles of water are produced when 3.00 moles of nitrogen gas are Jr'orl‘ned? a. 18.0 mol 6 nu/ #2,? , 11 100 mol C319“, flp)(__.__—————} r 9-0fi'l #19 24»! ML- c. 6.00 mol f d. 3.00 mol 9.00 mol #0" ‘5’?! 31. How many grams of oxygen gas would be needed to form 5.10 moles of water? a. 54.4 grams 01 3 A", 0» 0 o ‘ .Iflai/ x/ )0.”- M: 9/. c w... b. 163 grams ()2 L‘ 3.9 .5“.[ “1‘0 W} a“, J c. 40.8 grams ()2 " g. r Cl. 36.3 grams ()2 ‘ 1 81.6 grams ()2 “In?!“ Amula. 00+. 32. About how many moles of oxygen gas would be needed to react completely with 14.0 g of ammonia? a. 3.00 mol 09 A“! ‘ I a!!! 3 Evil/02.. )# a b. 1.10 molO2 ell/9M4: W W 6.61.9.0!!! z, c. 18.7 mol ()2 fl 7‘ d. 10.5 mol o2 Jail-Iii"? 65/01”!!- 0.618 mol o2 “"3” crew» on 33. How many moles of water would be produced if 4.00 moles of oxygen gas and 85. gta s ( ammonia were combined? Hint: Something might be limiting! 25' )f ”fix 6) 150 mol P120 Qw’ 00 m} 0;, M59) 3: ROM/ [.50 W h. 9.00 mol Hgo 3"” 0" . «was, c. 8.00 mol PLO — ‘ My howl/9% d. 3.00 mol Hgo (3’5- 9] ,3409 e. 2.00 mol l-IEO 34. \‘l-‘Thich of the following covalently—bonded compounds is described as electron deficient? 1‘"; a. phosphorus pentabrolrlide @ merges—J) 41. 1”"? 3:? c. Pet, (g) idmflL—Ct d. methane gas, CH4 e. sulfur dioxide no Iona/m4? on 441 Guam? 0147 ”42% rwl¢> AJ- 0K] 35. Balance the chemical equation for the Wstion of CHI-12202. \‘Uhen correctly balanced, the sum of all of th::oefficients is: / 24,7 gr 37937 a. . nghtzlrozr 4: fat, M“? {3 we, ‘P Ill-(LO b. ()0 c. 61 1L< GD .s e. .r 36. One of the following compounds is incorrectly named. Which one is wrong? a. (3120-. dichlorine heptoxide . Q N203 nitrogen (III) oxide goal“ IIMW’} “(L -£Y" M04“? MM ‘ c. Rb2C03 rubidium carbonate +1”; woual, I} figf‘ {On 35. d. 1%“:st iron (III) cyanide ‘ . .. g e. MnO2 manganese [IV] oxide ”3’03 bd’égfm 1"] 9”AL 37. \‘C-‘Then aqueous solutions of ammonium bromide, silver nitrate and calcium aceta e are mixed, a White precipitate forms. The precipitate is likely. - d “L. on” Q silver bromide ”’19" 8 f M‘ flail-MS o“ b. calcium nitrate I.” ”c 41+ ”53" MM! W3”! J c. ammonium acetate .9le .- wl‘fl §91fl11$ d. calcium bromide 1‘” ca,” M3: 6 U ru/‘J e. ammonium bromide 433', $o‘f' goldé, 38. Consider the hypothetical reaction: 3A2 + 2B -* C + 2D. How many moles of D can be formed from 5.0 mol Ag and excess B? 3' 1” ”101 (é'.0adA;, m w 3.3 m/dlv/ é @ 3.3 mol 1"“ ,4" c. 6.7 mol d. 7.5 mol e. 10. mol 39. \‘C-‘Thich of the following equations is NOT correctly balanced? a. 2Fe20% —> 4Fe + 302 b. Br2 + 10 PING.) —* 2 l-IBrOs + 10 N02 + 4 l-IZO Q 4 NH. ~ $622 a 4 NO + 6 Hp {Audit 5‘» ‘93, d. 3Ag28 W 2A] —> ()Ag W Alas.) e. 2P1?) + Xefl 6- 2Pl—5 W Xe 40. \‘C'Thich are spectator ions when aq1: eous solutions of BaL and K2804 are combined? a. K7 and Bag? @I” [nu/3U: 5“ b. SO42" and I" Kt may WIT/[m Bay and 30f" C. K‘ and 305 84.1}. 4» (as-0"...» 3:59., will: I}, I6 I with Ki and I— ...
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