Chap 4 - Key - EXAM H - CHAPTER 4 SPRING 2010 - GENERAL...

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Unformatted text preview: EXAM H - CHAPTER 4 SPRING 2010 - GENERAL CHEM m Multiple choice _ — — Multiple Choice 1. Which of the following is pair-ed incorrectly? H2603 Strong Acid - Nitric Acid Strong Acid (c) LiOH Strong Base (d) Phosphoric Acid Weak Acid (e) HF Weak Acid 2- Which of the following compounds is an Arrhenius base? (a) CzHaoz' _ . , . . (b) HCaHaoa .A'I'i'ri D’in‘ " . H? ‘ . ‘ - (c) HCIO 55m? an; X, 1-1;: V @ KOH 3. The hydrogen sulfate or bisulfate ion H504" can act as either an acid or a base in water solution. In which of the following equations does H504" act as an acid? (:1) H504‘ (aq) + H20 (1) 1"» H2504 (aq) + OH' (aq) Emir-s " ._. .-: iii .1 ' 1 :A i (b) HSO4' (aq) + H30+ (aq) : so3 (g) + ZHZO (I) it r - a. " r - .‘ -.- it,» ,9 (c) Hso; (mm OH' (on) 2 H2504 («1) + 02' (aq) @ Hso; (aq) + H20 (I) s 5042' (aq) + Hacf (sq) _ (e) It does not act as an acid in any of the above '1‘ b i. f— 5* 4. Identify the Bronsted—Lowry acids and bases in the foilowing equation: H503" (as) + CN' (an) S HCN (no) + 5032' (as) (a) B, A, CB,CA (b) B, B, A, A A. 3, CA, CB } A, B, CB, CA (2) B, A, CA, CB 5. Which of the following is considered a strum electrolyte? (a) NH3 2 Wlflif'l‘a‘fl’ffl 5 wesz cimianifiifl (b PbClg : 4mm; ; your-,1 altitliiniijic d) NaC2H302 = Soiuiofl- ionic ewgpd 5 $‘i‘i’UY\5{i\€CiV“i-ji€ (d) HECOS : My; amid : war-tic eificisioi‘fite (a) C12H220u 2'- ovgmfic mm ‘— m’a“? oweiiwikjib 6. Which of the following compounds is soluble in water? (0) -§-"-: l“ (b) FePO4 n' (c MnCO3 ' - I __ y ‘ (NH4)25 - M: lit.” '- arr Suva-4:— (e) All of the ionic compounds are insoluble in water PAGE 1 OF 7 EXAM II - CHAPTER 4 SPRING 2010 — GENERAL CHEM 7. ChooSe the statement below that is true. A weak acid solution consists of partially ionized acid molecules {b} The term "strong electrolyte" means that the substance is extremely reactive (c) A strong acid solution consists of only partially ionized acid molecules (d) The term "weak electrolyte" means that the substance is inert (e) A molecular compound that does not ionize in solution is considered a strong electrolyte -— Sl'rim} IVH'JH"? lUEA’ {Ah-.7» .1572;- ! :- r‘Q" l"."“:(.‘ B. In the reaction ofCuBrz (aq) with Pb(N03)z (oq), the spectator ions are: (a) Cu2+ and Br' 2+ - _ (b) sz‘ and Bl" _ 3L! arc; 1-!” “I i ibillgljfit Ir 4"). J a E’r‘ {HA (c) Pb and N03 3' r 3- J ., ., o; (d) Cu2+ and sz+ Cu” and N03' 9. Which solution contains the greatest number of chloride ions? (0) 5.0 mL of 2.0 MNaCl .90 or; ii i" l n' i‘ r 2' k) = $0 t I; (D 60. mL of 1.0 MCaCIz (in: if - .v i' 1 i .‘-' ‘ 7“ : i2!) .1- mm; (C) 10. mL Of 2.0MFBCI3 1' 9 "-j'ul' "t" In)": E ' 3 il‘ l ‘5 "' {'g “- -. ~ 1‘: (d) All of the solutions contain the same number of chloride ions 10. Which of the following do you need to know to be able to calculate the molarity of a salt solution? I. The mass of the salt added - q, 5, II. The molar mass of the salt a a ,3 ll? 7_ ' ‘r’ {'1’ " '3 finé'wi' ' III. The volume of water added 4 ' ix 212‘ x i if _. M IV. The total volume of the solution 1 a q I, b ‘\ (a) I, III -7 L I. y 3 I i (b) I, II, III ' ' ' ‘ '9 c II' III 0“ l l'l‘iflrl no. it Fawn-lea"; I, II, IV ‘ (e) You need all of the information 11 . Which statement about dilute solutions is false? When a solution is diluted: (in) The concentration of the solution decreases “Ttnlfi. ‘ t | (b) The molarity of the solution decreases - Holman! L Qufirei-ttialbo == TTWE" (c) The number of males of solute remains unchanged - TmL .. Mass, saline 53—4. ; mots kite-w The number of moles of solvent remains unchanged 7 FL; {.1 .v T“ .2? {a how diam cii “on 5:5; i Mcl 50”“ l’ (e) All of the above statements are true 12. You have Separate Solutions of HCI and H2504 with the same molar concentrations. You wish to neutralize a solution of NaOH. Which acid solution would require more volume in (mL) to neutralize NaOH? k." @= The HCl solution H1 501% i“) a c-ligsblt‘e {SI—(Ed: 7 Arupntkkffi 1H+ Clitfiflfi “3 H '- The H2504 solution NM has Di" n» . (c) You need to know the acid concentrations to answer this question (at) You need to know the volume and concentration of the NaOH solution to answer this question (2) Both answers c and cl are correct W 13. You have a mixture of CI' ions OH' ions in aqueous solution. You wish to Separate them from one another. Which reagent COULD NOT be used to separate them? (—— MA An} MD} AgNOa r W a,“ a yr H‘ (b) Ca(N03)2 Cecil 5.5mm {- (‘afOtfll {-5) .2 main-liable. mars m I y I (c) “(Ni-7332 Coil? Solubilc r Cuioilil in = 'msaldfflhz. Sign "3+ fi‘im ‘5’ (d) F6(N03)3 fig ($3 fiat-disk ‘-’ FE ( (J i1 'i g ( H 4 inguiubm’ ‘ éL Fifi-r Am (e) Any of the reagents could be used to separate the two anions .. 1le “' Cfl'i'lHo-l u“; ‘ PAGE 2 OF 7 EXAM 1T - CHAPTER 4 SPRING 2010 - GENERAL CHEM 14. Which of the following statements is false? (a) When a metal reacts with a non—metal, an ionic compound is formed film a. (b) A metal to non-metal reaction is an oxidation-reduction reaction ' “True : A‘h'ahS‘PCV (a :- Ffdsré REM (a) Two non-metals can undergo an oxidation-reduction reaction — Tm in @ When two non-metal react, an ionic compound can be formed .. N3 _ (e) A metal to non-metal reaction involves electron Transfer , 1m; 15. Using the following portion of the activity series for oxidation half reactions, determine which metal displacement reactions will occur: K (s) a |(+ (aq) + e‘ AI (5) ——> Ml3+ (aq) + 3e" Fe (5) —> Fe2+ (aq) + Ze' 5n (5) —> Sn2+ (aq) + 2e— (0) Al (5) with Fe2+ (aq) and 5n (5) with K“ (aq) 0:) Fe (5) with Al (5) and Al3+(aq) with 5n” (aq) @ Fe (s) with snz‘ (aq) and Al (s) with 5n? (aq) {d} K (s) with AI3* (aq) and Fe (5) with AP’ (aq) Free Response — Be Sure to Show Your Work! This includes all equations and conversions! 1 . Deacribe how you would prepare a 6.00—L solution of 0.100 M nitric acid from a 12.0 M stock solution of nitric acid. Show calculations. _ ~ fig. mgr-5' Ling) ‘5 "LL12 " G Haw .. MD. Us {at s . i . .6 i P " ii | VToiH ' Van” -' 4;}? :5" fl .5! '12-'34 .- ___V l to“ w “I: 1 It? i is ‘ L 1 — 5.51.5 L :10 if“) Dam} ‘.r is -' a {0‘ moi-Vii: 0-395. ) l in .- .. _ '.i " ' ‘9‘” " " " "3 U "5' -‘ i‘ 9:.» Hr"; ' TotAL 7'4: 9.2-5. M r r w i "(C —' 1050-01.. / i . t - r J - w 'r i) - 4- -'-3im Ms t 00633;. aj ‘MW i‘-"“.’a 5.91:. i. tide _. iii-1 2. A solution is prepared by dissolving 0.5842 grams of oxalic acid (HZCZO4) in enough water to make 100.0 mL solution. A 10.00 mL aliquot (portion) of this solution is then diluted to a final volume of 250.0 mL. What is the final molarity of the oxalic acid solution? :5 . ,f—», f‘ _ V _‘ I __, Li, H _. I. O O“ LN Mr ‘3': gr;- > O . a) gilt, :JJ‘! i: lip-Ilia l u) .. U 3 [a I Ll‘ “a 5":- I ch I -)i f q ,1 " “ML 0 1' - (1 ')T1‘|I_ I t r ‘J I . -4 £14.“):J c. r -§?M Mi l w l 7 ‘v H _ 0 Jive-la; i .I ( i v a __ ._7,__,_______ r C it‘ ,—— D ' iGDfl .. Mi, ( i c‘ , [L's 3’5 if i 1’0. oases i”? iii-Mm": ‘ H- __ _ . k . l \l _ __ __ V r ....... .._' fig " .w cart; I I ' \ r l i ‘ V . l1 :- H i , , l. i‘ 2“; Joilund» 3.5 alg'flaD.5}'l‘ PAGE 3 OF 7 EXAM IT - CHAPTER 4 ' ' SPRING 2010 - GENERAL CHEM 3. How many grams of calcium sulfa’re can be prepared by the reacfion of 100.0 mL of 0.100 M calcium chloride with 100.0 mL of 0.100 M iron (III) sulfa-re? Calculm‘e The concenfmfion of each ion uf'rer precipi’m‘rion is complete. Par! ‘\ 4. 7:. ' E I 3" 2”» F, 504 5 (N. —-—> 1201430” (a .1 e Gite/LL .6 "w V I H .__ .e I. ‘ _ _ -‘ rm 71"” ' 3’} 3153-1“; , 3.!151‘ ,.- r a r“ .- .n (I f [j Pam?“ . om - e ‘ . e “ r , - 2 am; ‘o.1c.n “51:: “mfg/52*. :I: v.1 . : " him») v , , v: 2.“: (£4; (90117.! ‘- 5v a “’30 (gnu: 1519‘ lclo )4} ‘ (f p i4. \ f" A J?" ’E—q‘J _ {A .- 14 — V -. f F‘- j L: ‘10-'91 5' ' a . . 2; '7. ._ . . 'r"""‘--1.'/1 ('wa F-"mf'; i7” fray .. 5‘ 7c} ‘ i I ,2“ O "T" r ‘ _ ‘ 7 Li" _" ‘ '7 '7 ‘ '—V—- / IUDU u»; ‘ hr) 3(1 523' '13 a . jpo '_, 77 .7 ' I A a ' ' _ ' .. 4* U- ‘5' w. Mr 50-2 w 11. {33.9} rr+v' ' .' '_ r 4—.139 1H. J; OJODJL‘ : ‘ ' __ _ . , “1 “2' ' loo-9:91 "‘ " 1,." i:- f' SD - . yon - ‘ H [C11 "‘1‘ '1! '3’) . = — (.3 0 JEN"? mw‘; ’ I7 ' a u 31 D.rDD;';':..-L 5"") If ,_. ue‘ . 7 . “173, rpm. | ,1. n i W114“ 3 ’ 0 aim? at r5 ‘ [- 04“; ' f‘ l“- \ '. I‘l' Lrucl url) E» can? f — 'd7—7_ '_ " yl'pfllg .I‘m'f 3; u'lr1lr11rx‘xfi} h _ ' I J: J"? I I" */ PAGE 4 OF 7 EXAM II - CHAPTER 4 SPRING 2010 - GENERAL CHEM W 4. For the foilowing reactions: 0 Name the type of reaction Predict the products Baianca the equation Write a net ionic equation only for reactions that apply State whether the reactions is an oxidation-reduction reaction (a) Aqueous barium nitrate with + aqueous sodium phOSphote 3 a. ' E.- i. - - if. 53%flwfl) 4"”? NV 31E}? é {r {A<;§-) 2 RKVK W.-w‘- hag—.3 “.mwflw‘”; N- _._ 2+ 3' 33d (Alf) '1? 310011! (“$1 ".9. (g) (b) Zn(6103)2 (mt) + (NH4)25 (mi) 4 a“ -.._ ._k___..«~—" ZHCC‘Oaizufiy + (Midas -—> $156) thH‘iwofi an“ 3 pp? Rm .rm.--"‘~- ' 2+ 3.- 2m W?) + S (Mr-W m”? E'HSLS) (‘3 “Nos (04) + Nazcos (5‘1) '* v t" i , ' git? 1.321316 m 4M 5 (A? ZH’rm j + (’o '7' 1 . 5i 3’ WP) " 7 i253 {M t m; {o} '3 (d) NHJ (flq)+NaOH (oq)—> K“?- a t, .‘ W I “‘5‘ * “WM-(n “9 “Howarmébjfifi M433) Woo) t— Na'iui'" NH 7. flag, {with-Hi i L L! (up 1' 0H" - 'r - “*3 ‘1" H10 fits}: “iafilfia (2) H202 (I) -> 9' “102 i? I) «*5 JHfl (I) t 0; {3) (This :72. tot-mi ragtime) :- BMW-fig“??? of I‘M/“"xnw/ ' "" fifdfifi “1° 2 (I? i Q H; 5.553, + o 2 {M PAGE 5 OF 7 EXAM II — CHAPTER 4 SPRING 2010 - GENERAL CHEM (f) The reaction of perchloric acid with magnesium hydroxide .94" ""=-~-.._~u.an-—-"" 2H: t loi—i(' {flaildlwi’f} E. air i 0%» r? nga {f} : Acid 43052- m ll: Wt? Wit) Me aim. ii whm (g) C3H3(l)+02(g)(limited)—+ ‘4‘“ "v m Causal i: 0; Co A “a .._ l. _ l 2 :1 I we”: : limited C6”? , tomb ‘ if?) l” ’3 3 3‘30 lt- Lllllo it. had— Ifl "Hf, ..w 526 l1: ‘ 2: z (a) r 10; {53 -~V (.ca 593 in 3 Hum“ chair 3%??531 0!) Li (S) + H20 0) —> JLim +‘Jllol’l PM Mayor 1: -. £2. ; W will} "‘ "‘2 «2% -» “"filfitflfirlf’ Fulani; Rim R chm—maxim (i) Magnesium metal with hydrochloric acid Me) (b) t 9140 (up ———> Mflcll (mp t “2 (Cl) " D‘sfilflflmflfil’ “limit ,n—nwr K....-—- “9(5) r 2H1???) “my “flur- k MES“ Ha 5. A 10.00 mL sample of H2504 requires 35.08 mL of 2.12 M NaOH for complete neutralization. What is the concentration of the original acid solution? Write a reaction for this neutralization. llafi'flcl {'QNabilflfln r) Na; 5M?) -i— lléag" looms-L, 3§ flame, ‘ J \o... m “I J- a; H. r _ _ gglos Vx‘l J i 12 mMam-r, I l Wail. iig‘ffleé 3 '4 a M 1401304 ‘ #m" - 7—7 4:? - r r-(‘_m—‘lln-‘ufll— wr— lfl—l ‘ Vy— _- w.....r.._.r ;_ ‘_K H_ ,.___. __m PAGE 6 OFT EXAM II - CHAPTER 4 SPRING 2010 - GENERAL CHEM 6. Balance The following oxidation-reduc’rion reaction in basic soiu’rion. Identify The oxidizing and reducing agents, as well as the oxidized and reduced atom and their oxidafion sfa’res. If CN' (aq) + WI (114) —> (NO- (uq) + MnOg (s) 1'.- i" "9-75 r rir' P .. r H / ' ‘ I (L 9" u} (14“ : CW: "bk w 'j «4 3 ‘1 r‘li m'uif, I..i,.,._.. J J In Ii 4. fi _. J ,1 , I }| "ll 5 1| M1 If [F '——) J"- : [r [:5 i I “POLK ‘ " H. - \U f". r, m- I‘lnD'i'flH 5’ "H + A” 3.?" l’".«'\' i‘ I I H, q! 9 HPOB r .4} o I n' v 1' ’ ' _ 1 4 F ' — ' H I ‘7 1 P ‘ ’ in PM a- 4, if , (5,]- i r, urjir- \ H n _ . " 3. ‘(J [ii in [5,“.l‘I‘ -. ll,’ l! 1 a- ‘ ‘ 5 hi. 4 1' ‘ - i J 3‘ l *‘7%QHI‘ Tal“a+l'J£_0 J (- . r Jim-i” jfllvh '1' ‘2! _ _ 7 r Jot-{— - gut-JP 1;} [III :LJ‘; " r,‘ ‘ ibr‘lfb J.’_1 I: __) 7 . J k v if] i: __ ail. 1:1}. I 1-)); ‘ " LBJ—Li “Li'iji”; '31 ' '1 5 l #3177: w— t; i/ Check M______—_rH—_.____H—_._._—__H_—.— PAGE 7 OF 7 ...
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Chap 4 - Key - EXAM H - CHAPTER 4 SPRING 2010 - GENERAL...

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