keyt2_07 - Chemistry 1035 General Chemistry Test 2, Form A...

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Unformatted text preview: Chemistry 1035 General Chemistry Test 2, Form A You have 75 minutes to complete We test A periodic chart and reference rabies aare attached :0 this ies! The Honor Corie is in force on this test: you may neither give nor receive aid on this test Tom in only your opsoan sheet when you are finished Scores wiil he posted tomorrow morning on Bfeckboard I. To what extent does iOfliZHIiOfi occur for a strong eicctrolyte? (1) 0% (2) 5% _ H . WW __ 50% Qggco f‘ more e h r" a 2. How many moles of'ions ar_e_c_on_t_a_i_ned in 100.0 m_1_,_of2_“00 M AECEg? mica/5””? gym €91;- H (i) 0-3 - 4 %+ S‘flzgr‘wfi 0:; i were we Ar «r (4) 200 rewé é”? V?" 9!?» 3" What happens when a solution of ammonium nitrate and siivcr iodide is mixed together"? (1) siivor nitrate precipitates. : . ? . . . . . - w . x m g w/i/Q (2) Sliver Iodide prompxlatcs. N 1’ W03 A/ M ; 7 5:, (3 ammonium nitrate precipitates‘ new {Effie reaction“ ! r3?“ «m; 4. Exactly 24m80 mL of a 0,! 000 M soiution of KOH is used to tiit'atc a 50.00 ml. solution of formic acid _ {3001-1} What is the concentration ofihe formic acid? ‘04960M n Vfirfi (2) 0.2016 M t .. . x r 3 0‘01240M a _ . .4. i4; O‘IOOOM (5 Q'OQWQ 1 (m’iflfifl‘fl i/KZ bf'gflm) 5’ What is the pH of a 5D x 10'3 M solution ofl—ICI? W mm (1 2.50 ~- - M @30 ii Pg} .5: rec/9&3? fgfl Wfi flag (3) 11:10 i (4) 500 E :3 2‘5@ Fall 2007 page 1 of 5 Form A 6.‘ What is the pOH of a sotution that has a measured pH ofSD? (1) 14,00 [ “7;; i0};— + yotfiii ) sioo ? A . 1 r. Erie- «00 9%m5wa fig” (4) “.00 mfg;- f, a: 7“ For the reaction: Cttz'flaq) ~£~ an —-> Cum + Zn3+{a,,,, which reactant functions asthe reducing agent? ~—~ in 5. ,g V .; a ~ g (A: flee-mars e?*e’a3?§; Write; @flfaji-g“? *5 2% 26,5} fifitydiyafin 4c; g” 8~ A sample was anaiyzed for hydrogen peroxide by redox titration" A E00 1111. sample was titrated with a 0,100M soiution of KMnOb The titration required 332 mL to reach the endpoint. HOW many miliimoles of hydrogen peroxide were contained in the I00 mL sampte? The balanced redox reaction is: 2 nO4'(aq) + SHZOQW) + 6H+(aq) —~> 503g} + 2Mn2+(aq) + SHEOU) g h : 32. mamas $30 mmoles 7(1rmwi Mn Car : 0.!(90M 9t» 3 3‘:sz g (2) 3,32 mmoles h . g “93%.. : egaMMaéfie (3) L33 mmoles Kmrttrgr geofl " %‘32 mm”); Who?” 1% ; Mme); ' (4) I6. 6 tnrnoles 9‘ Modem atomic theory describes the nature of'etectromagnetic [adiation (light) as: ( 1) Dark Energy (2) A wave ' ' .53- () A particle t “a 0th a wave and a particte 10‘ The electromagnetic radiation used to burn satt water (in the YouTube video) has a frequency 0f13n56MHzn What is the wavetength (in meters) of this radiation? 1 .1460 x 10mm @ZZIEIH & V \k‘ ’ C, ) y. k f‘ .53 f . ‘ ii‘ggomm 22%;??72 wage/é e “35””? W ix; 2am m Fall 2007 page 2 of 5 Form A Use the Rydberg equation to find the wavelength (in am) that corresponds to a hydrogen atom undergoing a transition from nfl3 to n22.) B V fig WW; (1)91‘2nm ‘ ff: AKD‘QQ77é Mia/3% I 3% 2f?» (2) 455.9 nm ? _ 1,094.4 nm K : (0%???” rate/Q E K a: i,§23y3‘53‘3 he: Q5Q§W0flm Mb. égé'émm nm 3&5 What is the energy difference (AE) for a mote of hydrogen atoms in the above problem? (i)-t.‘31x10(’J "to 0 mm; 2‘437x1053 Ag": -2.l€ffi/0 T 2}, Se. Cifiiszxtofi w gwéiegofgu (4)~3.02x10"9i at; “2" so 3 mm 13. A university sprinter can travel at a speed of 40 km/hr in a short dash, If the sprinter weighs 65 kg, what is the MdeBroglie wavelength (in meters) of'the sprinter? m3 5 la r“ H “fithXIO'Nm % (La-1:" itflhiaii’t/fr ’3" 3g,an (2) 1n09l><103°m k ‘ $315 (3) cassava 10"” m (4) 330 x 10‘33m t4. How many orbitais in an atom can have the designation of'3p? one orbital .( .e 3 @three orbitais 35; £55 [7 : (3) five orbitals “gr '3' (4) seven ethitais 15‘ What are the allowabte m, values for an atom with n w 4 and l w 2? n2, -1, 0, 1, .2 (3) 4,0,1 (4) o, i, .2, 3, 4 16" Choose the correct ground state configuration for Rb. 1 [Kri'é {Kr} 55* (3) [to—145* (4) [K115534d7 Fall 2007 page 3 of 5 Form A 17, Choose the correct orbital diagram for Fe” showing the vaience electrons. "gm é» m an, 1m; to; [oil that 33 4s 3:! M + g {:3 mg {I} Mao?“ the? W3“: 3 (3) {Ar} Lima “3, »Fram»-i 4s 3:: t (H mm E "newt I8“ Which element has the smallest ionization energy (H31)? i9 Choose the correct ranking of the following ions in terms ofincreasing size: SCE‘,BF‘, RED-i EDI? é a (2) Rbt Set, Br J. .. g} “Lficwm as? .. 1 r I a » _ ; awoke to?" t Rb*,Br",Se-“ 5% £ ’99” “gm: ":9 /»~~M- (4) they all have the same size "A :3 g/ {M .20 How many unpaired electrons are present in the ground state of P (a Group SA atom)? (1) one 21‘ What type of bonding occurs in the molecule BT01? (1) metallic “g’gifi 3’» we? a a .9 ca» waged?” "22.. 21 What is the group number of the element with the Lewis dot diagram, .X: ? f} $ fl (1) 7A Fat! 200? page 4 of 5 Form A .23. Identify the main group to which X belongs in the compound formula, XPO4‘ ( F) Group 1A Group 2A x 73;; @fioup 3A (4) Group 13 @svf21'%“7l€fiw Qw&%@ 25“ CanuEate the AH°M of the reaction using bond dissociation energies. (E) -289 kJ - (2) +22 1a 1; F T C”) @221 Hmo—owH + 050 HmaC—dO—H (4) 1,092 k] ;L Eli ,jé 0 5.5:a firfifi E / (“g/fl Me. I fig? 5 ; gore» Fall 2007 page 5 of 5 Form A ...
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This test prep was uploaded on 04/01/2008 for the course CHEM 1035 taught by Professor Jgdillard during the Spring '07 term at Virginia Tech.

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keyt2_07 - Chemistry 1035 General Chemistry Test 2, Form A...

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