Test_2_Solution__F_06

Test_2_Solution__F_06 - o \wduarmz’ww‘wwwa MWWMQMH‘...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: o \wduarmz’ww‘wwwa MWWMQMH‘ {m o», . . Chemistry 103 5 Second Test This is FORM A. October 18, 2006 Signature W Printed Name I promise that I will abide by the Virginia Tech Honor Code while taking this test. c 1 3.00x108 m/s h = 6.63X1034 J's Avogadro‘s Number = 6.02x1023 The ionizgtion energy for hydrogen. if the electron is in the n = 1 main energy level. is 2.18x10" J. 1szzslzp‘s323p64sz3d‘04p65s24d‘05p6os24f‘45d106p67525f‘4od10 1. Arrange the following aqueous solutions from least acidic to most acidic. Solution A pH = 9 Solution B p0H : 6 _ H :r. g Solution C [H+] : 1.00x10‘° M if H 2.: g; Solution D [OH'] : 1.00x10’10 M H :2 1+ l. D (least acidic) then C then B A (most acidic) 2. D (least acidic) then B then C A (most acidic) A (least acidic) then B then C D (most acidic) 4. C (least acidic) then B then A D (most acidic) 5. D (least acidic) then B then A C (most acidic) 2. At 250 0C. the pH ofa solution is 2.13, what is [OH] in the solution? [OH‘]:1.35x10“2M «Beam :2 Mew/34‘s :— are? 2. [OH']=11.87M 3. [OH'] = 7.00x10‘6M 4. [OH‘] ——- 4.69x10"5M L0 H5] ~=~ Scrw‘i'gq :— Iafi xicfm‘M A compound of carbon and hydrogen is combusted completely with 02 to produce C02 and H20. In a particular experiment, the combustion of 0.280 gram of the compound produces 0.880 gram of C02 and 0.360 gram of water. What is the empirical formula for the compound? at W 3 442 G ’C M W a E 8 * G 1;) 1. CH 2.)} CH2 3. CgH 4. CH3 5. C3H :2. 53-43 ~ y i. i w , .. “WM/Q“ C“ 4oewggmmo “" iflO-KEG l oxaioe “‘“i gm . w 21.0 .3 . 51 i :1 - \ y,r “*2, O.C>‘¥“’€L‘C§ r," f; xWMm.f-§ w Egdaéér3é6jiec} 4205530 Wiéhagwfié Mm. . < «in mmumawwwwréwflwrmfimafiw360594. w « If 100. mL of 0.3 00M aqueous C2H5OH solution is mixed with 200.0 mL of a 1.50M aqueous CZHSOH solution, what is the molarity of the final solution? a a {East-3. 1. 0.600M M 2:. ,Q‘QC‘G Wm? "L" {‘53 Paaé‘éj 2. 0.750M 'Laamgafiac‘: 3;. 3. 0.900M secs: 3 <3) 1.10M M T 5. 1.30M “"‘ hm” F51” w 3— iz‘? S An aqueous sol ion is prepared by dissolving 50.0 grams of chromium(lll) chloride, CrCl3, in sufficient water to prepare 200 liters of solution. What is the molarity of chloride ion (CT) in this solution? am Cé.,.3 Wm? $122+" it“ 3 ca" 1. 0.158M 2. 0.316M 3.070.474M 4. 0.947M M ~ii :3 L8? mi I) ‘ z; t; , 3 I” 3; ' “ LAM:ng Zyaa C,i5§ 3’"in :2; 3315:}. igwfl 3.4”; {MW} Which of the following substances is not an electrolyte? 1. KOH 2. CaClz 3. i11er3 @CHgOH \Mfluflnw ficaizzt’: if Which one of the following acids is a strong acid? 1. H28 @HN03 3. HClO 4. H2C204 Consider the following balanced oxidation—reduction reaction. 2 KMnO4 + 5 H2C204 + 6 HCl —9 2 MnClz +10 C02 + 2 KCl + 8 H20 If a 0.200 gram sample of H2C204 (MW = 90.0) is dissolved in water and titrated with 0.100M KMnO4 solution, how many milliliters of KMnO4 solution are required to reach the endpoint? 8.89 mL of 0. 1 00M KMno4 solution 2. 22.2 mL of 0.100M KMnO4 solution 3. 55.6 mL of 0.100M KMn04 solution 4. 180 mL of 0.100M KMnO4 solution “w _ H lrg’kaé’ f' ’ ‘ ’ i la,» ALE} if; 3:- Qi’iflwwé’t’fi" 2“ Vi}: {jig}; iv . ’ ‘ M “2'2" 0 if g 3 fi’fi‘thfiéiq. V WM was "“ 93° “s K «9 f ~N- W *W" k i 5*" H35" \’ wiwmaq, W 53‘; i $0.3: I; L mammarxxmxww 10. ll. 12. What are the oxidation numbers for silver and phosphorus in the substance AggPOa? l. 2. 3. 4. +1 for Ag and -5 for P -l for Ag and +5 for P +1 for Ag and -3 for P +2 for Ag and +5 for P +1 for Ag and +5 for P —— a +5; 2;: W M +43% +1 In the oxidation-reduction reaction «4— '5 +3 y z. 1% 2 KMnO4 + 5 H3C204 + 6 HCl —> 2 Ml’lClg + 10 C02 + 2 KCl + 8 H20 what is the oxidizing agent? KMno4 For the balanced oxidation—reduction reaction 2 Al + 3 Br; 9 2 AlBr3 which one of the following statements is correct? 1. 2. (33 4. 2. H2C204 3. HCl 4. MnClz The element oxidized is Al; it gains three electrons per atom. The element oxidized is Br; it gains one electron yer atom. The element oxidized is Al; it loses three electrons per atom. The element oxidized is Br; it loses one electron per atom. For an acid—base titration in which the the neutralization reaction is 2 HCl + Ba(OH)2 ~> BaClg + 2 H20, how many milliliters of 0.125M HCl solution are required to neutralize 100 milliliters of 0.0100M Ba(OH)2 solution? 1 2 4 . 4.00 mL of 0. . 8.00 mL of 0. 16.0 mL of o. . 32.0 mL of 0. 125M HCl solution {vwg—afiéi H CAL w 1* B aflflz‘fig z, w E Mi H 021, :- limmyéw Em CE? HA1) ., .32; 3V" ii Mince. H ca. Z: [EEWLGH )3?» l: galwfigfl t}.s’2.5\:‘lg%:: Xiamaegiraa) 125M HCl solution 125M HCl solution l25M HCl solution How many grams of NaCl are formed when 50.0 mL of 0.200 M HCl solution are titrated to the end point (equivalence point) with NaOH solution? 1.x 0.765 g NaCl 2.} 0.585 g NaCl 3. 0.400 g NaCl 4. 0.010 g NaCl F w r: $.53” H cc, + N as: H was Mex. Ci: a» HA5: a...“ “W l lacs: Virice, 7‘ $2.00 «M55352; 7“ LEEC’} Kits/2‘21 Laoxeow‘zflswsfi :2 3.585535 14. 15. 16. 17. 18. 3. In the acid—base reaction HN02(aq) + NaOH(aq) —> NaN02(aq) + H200), what is( are) the spectator ion(s). Nitrous acid, HNOZ, is a weak acid. only Nal 2. only N03 3. Na+ and N02" 4. HF and OH- Grimm—:3 Mfie We; 4» HM? Hiya; «luv-(:3 H “W Narng 4-» Maui": What is the n_et ionic equation for the reaction A1(N03)3(aq) +f3KOH(aq)< —> A1(OH)3(s) + 3KN03(aq) ‘2 Mr“ 3-3332?“ 4r + 3 e H WW £1.32 to H33 «iw 23K + W»W\3W l. A1(NO3)3 + 3 OH" —> Al(OH)3 + 3 N03" 2. AP“ + 3 KOH —> A1(OH)3 + 3 K Al3++ 3 N03' + 3 16+ 3 N03; —> Al(OH)3 + 3 K“ + 3 N03' AP“ + 3 OH‘ —> Al(OH)3 Which of the following reactions is an oxidation—reduction reaction? BaC12(aq) + 2 KZSO4(aq) -> BaSO4(s) + 2 KCl(aq) HCl(aq) + KOH(aq) —> KCl(aq) + H200) 2 H3PO4(aq) + 3 Ca(OH)2(aq) —-> Ca3(PO4)2(s) + 6 H200) None of these reactions involve oxidation and reduction. 1. 2. 3. 64:; When the two aqueous solutions Pb(NO3)2(aq) and Srlz(aq) are mixed together, which one of the following statements describes what will happen? M. g E) fffwww k E? l. A precipitate of Sr(N03)2 will form. i" . , "I: " A precipitate of Pblz will form. F; 5 £1 3. There will be two precipitates: Sr(N03)2 and Pblz. - ‘ 4 No precipitate will form. .333, L38 53%} To ionize the electron from the ground state of a hydrogen atom requires 2.1 8x1018 Joule. If the hydrogen electron is initially located in the n = 3 main energy level rather than the ground state, how much energy is necessary to ionize it? we 3 k “l g (g lifelfixmfie (j - wégl mzeefiwxm .3 l. 6.54xlo'18 Joule .53 E23... 2. 7.273(10'19 Joule 2.42xlO'19 Joule 4. 1.96xl 0'17 Joule I9. 20. 22. 24. The wavelength of orange visible light is 700 nanometers. What is the energy of a L101 of photons of this radiation in units of kilojoules per mol? . 2‘; ~ » . WE’J‘CE": a 3.06fEC? 5.62:3 C} ,x 171 kJ/mol ofphotons E :1 ~§i£m L: \ W, Cg E 2. 171le kJ/mol ofphotons 7 5} 9 x l 0' 3. l.7lxlO'7 kJ/mol ofphotons M x , . w iii, J 4. 2.84xlO'22 kJ/mol ofphotons ” z ’ 3 (l, X ‘0 eaters. may”! Lezxto. " ‘” ', I: Wh&d What is the frequency of the radiation emitted when an electron falls from the n 1 4 to the n : 2 main energy level in a hydrogen atom? W 3 5 f E ..__ l. 2.06X1014HZ {XE—‘3 lJS’XEC} E I'M/7‘2. “'” Afil "“ I21} 2.} 6.17x1014Hz 3 W . f ,4, 3. 8.22x101sz '0 “"‘ ‘9“?wa 4. 6.58x10” Hz The wavelength of electromagnetic radiation is 950 nanometers. How is this radiation classified? 1. visible infrared 3. untraviolet 4. X—rays Which of the following elements has the least tendency to form simple monatomic ions? 1. K 2. Br 3. 3 @Si 5. Pb How many orbitals are there in the main energy level with n = 5‘? 1 1. 5 2. 10 @25 4. 50 film a 3.. I L w :5 2.5 Which pg of the following sets of quantum numbers is not possible? s» r‘ 25. What is the maximum number of electrons in a particular atom “ “lid {2. quantumnumbersn=4gé= 2,m/= —2? ah; i732”? ’f ’ . a, an M54241. 1e " .. 2. 5 3. 6 4. 10 5. 14 swam. 26. Which of the following ions is isoelectronic with sulfide ion. 82'? 133' 2. 02' 3. Se2' 4. Both 03‘ and Sez' 27. For a particular element, the four quantum numbers for the last electron to be added in the electronic configuration (the most energetic electron) are: n=4 6: 2 m,::+2 m.=+l/20rl‘ +5? {iii What is the symbol for the element? 1. Mn Tc 3. Re 4. Sb 28. Which of the following atoms has two unpaired electrons? 1. Al 2. P s 4. C1 5. none ofthese 29. Comparing atoms of calcium and bromine, which of the following statements is correct? 1. Ca is a smaller atom than Br and has a higher electron affinity than Br. 2. Ca is a smaller atom than Br and has a lower electron affinity than Br. <2) Ca is a larger atom than Br and has a lower electron affinity than Br. Ca is a larger atom than Br and has a higher electron affinity than Br. 30. Which of the following ions is least likely to form? 1. Fe“ Ba3+ 3. Ga3+ 4. N3‘ 31. Which of the following ions is the largest in size? 7 . xx 1. 2. (3212* 3. 02' 43s} C 32. Lo) Lu Which of the following atoms has the highest ionization energy? 1. Na 2. Cl @;;Ar 4. Br 5. Kr What is the abbreviated (condensed) electronic configuration for the ion of nickel NP“? “5+ ’7 . T” r v f, :3, _ - a: I. [ArMstdu igmk 3?; A15 fifyyéj fiqvfiéf/ 2. [Ar]4s23d5 [an] -3 3. [Ar]3d8 [Ar13d7 . [Ar14s‘3d7 A main—group metal, M. has three valence electrons; its electronic configuration . C) . . . ends in s“pl. A non—metal, X, has s1x valence electrons; 1ts electronic configuration ends in s2p4. What is the formula for the ionic compound that would form from M and X? 1. M2X7 M "F X 2. Mng xi? x» 3. MX3 if N ‘3 G; we How many valence electrons are there in an atom whose electronic configuration is l822822p63823p64823d104p4 and what charge is most likely for its monatomic ion? 4 valence electrons; ion with a + 4 charge 6 valence electrons; ion with a +6 charge 4 valence electrons; ion with a —4 charge 6 valence electrons; ion with a -2 charge ...
View Full Document

Page1 / 7

Test_2_Solution__F_06 - o \wduarmz’ww‘wwwa MWWMQMH‘...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online