KEY-E2-Fall2010-eve - 52 M m 7 I#W T Fame Katmai Mg Elia...

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Unformatted text preview: ' 52» M! m 7%)} I} #W’? T. Fame; Katmai}??? Mg Elia”? glam C ) 2w ) gainer?!) [1249! wear/55a; at? afifg “fwm , Each question is worth 5 points. Choose the BEST answer for each question. 1. The sulfate ion is: a. 32— b SO; 8032— . SO42— e. SO43" 2. WIhat is the correct name for Ber? beryflium fluotide berYliium clifluonde We fig}? 9? a w “reg? gawk/W”! “Wymjf c. beryllium (11) fluoride tame flawleaaaé ail/7 may; at}, Wing d. berylh'urn (11) difluoride W/ fiftieth Gama 6. beryllium (II) diflnorate 3. Which of the following anions has a —1 charge? cyanide ion (14/ F” bromide ion (3! W bicarbonate ion /#£’flgm a and b a. b. c. c]. Q all of the above An 21. 4. atom with valence shell configuration 115211133 will form a fig; ion. 1— 3m“!!! .50? 3; 2— as») W! 3m i. 2+ e. 3+ 5. The ionic compound formed from the manganese (H) ion and the CO:— ion is: é) MnC03 . Mrs“ 0033"” if b. hinZCOa c. Macon2 d. Mg(c03)2 e. .. MgZCO3 6. Consider the following solubility statements. Which are ttue? a. all ionic compounds that contain the acetate ion are soluble in water if” b. all ionic compounds that contain the nitrate ion are soluble in water w” all Salts that contain aikali metals are soluble in watetw/ a and b C d. Cg; all of the above 10. 11. 12. Which of the following likely has the highest melting point? a. b. @ d. e. CS2 CO2 CsBr I‘M? Ila, CBr4 CH4 Which will react with sulfuric acid in a neutralization reaction to produce cesium sulfate? 3'. C. KOH CsOH Cl—laOl-I socliuru sulfate cesium bromide Write and balance the equation for the combustion of Cqsl-IZfiQQLH When correctly balanced, the sum of the coefficients for products iS' a. b. Ce? d. e 2 24 28 -49 56 / 302? fine/3e 2:3 a...me dig/{gnéOB “f” 20$; W”? {fgflz ‘f" 139x}; .390 My 5’30»? 9:99”? How many moles of alumjnurn hydroxide are in 35.5 grains? Avg 3.56 x 10—4 11101 0.455 mol 2.20 H101 78 mol 2.77 x 103 mol Ifififli F Pa“- "' 0tq§$ 39339; '2? a» 36%) t» ‘30) “ Wes/mg; Suppose that X can represent any one of the alkaline earth metals. What is the formula of the compound ' formed from X and the phosphate ion? a. b‘ c. d. a. b . c. .. XP X1304 .. X(P03)2 X30304); 23 g/mol 39 g/rnol 55 g/ruol 71 g/mol 133 ngnol Ms? W W X3 C£§af) Z, The formula weight (molar mass) of beryllium nitrate is about: fiegl was”; gflyflfilsw 9+ am) as are) e iggj/W/ 13. Which bond would be the most polar? @{eegfafifjaflgiifi% 1:" 2:8 ‘3"; se 2 first «saw Ca . 0—H I, 1:; M F I5 WES d. N—O a, g e. C—N @i {I 14. Which one of the following is not isoelectronic with the sulfide ion? a. Ar $0 a W I" ya Cb; F Maw I c. Cl— d. Ca2+ e. Sc3+ 15. SeO2 has selenium as the central atom. This molecule is: 5202‘- {fig @D a bent molecule with a ¢ 0 b. a bent molecule with M I 0 l w“ :gawjd 20a safaris. c. a linear molecule with IJ. :2 G d. a linear molecule with a : 0 H'Wfig m " 29a v” “M? ’20:, » mew amt art/W e. none of the above cg 32:0 16. The total number of valence electrons involved in the Icwis structure of the acetate ion is: a' 20 45,4ng M an b. 22 / I \ \N . M“ l c. 23 ‘1’ 35:) Li gig) 24 . 25 17. Which has the smallest ionization energy? (:29 Rb @- meztaé a?! Avatar/eff?! cm?! W b- O {WT we “leery” 4:9 few-W 6- N %' reaagiié /g;‘g & 97239 «grew €59 939353 ‘1 Al Aw :sw‘amlrlm wag/7 e. Zn 18. Consider the following reaction. Select the best description of this reaction. AlC13 + (NHQaPO4 *1 anO4 + 3 NH4C1 2W {9/ x'xw/ {of All reactants and products are soluble All reactants and products are insoluble Both reactants are soluble; both products are insoluble Both reactants are soluble; 1 product is soluble and 1 product is insoluble 1 reactant is soluble and 1 reactant is insoluble; 1 product is soluble and 1 product is insoluble A2; 34"" 02"“ . 19. Nickel and oxygen gas react in a combination reaction to form nickel oxide. How many moles of nickel are needed to make 3.0 moles oi nickel (ll) oxide? (Hint: Write and balance the chemical equation.) a. 1.0 moles 2d”; a); a; M zfifl b. 1.5 moles .Pmol _ 3mm, I (9 3.0 moles ‘ d. 6.0 rnoles ( 3mm we}? am; fig :3 $595M”; e. 9.0 moles " ' 2. W 299'0 20. Draw the Lewis structure for CH3CH2CHZOI-I. The H~C—O angle in this molecule is about: a. 90° ‘2 t; o o a a? 04’ “3° ” ° ’45? '- @ I ‘9 f ul I' 120° grgwg’ Mfr" “:0 “am/l! ' C. I fi’ fi' if d. 180° e. There is not enough information available to answer an; question. 21. Which of the following molecules has 11. 7t 9? " a. PBI3 [M M 0. sac} “ N u 5:3 F a W m i F Wu 0' 6. ms: «53? f a F 0... gen 9’ ’2’ d. b and c Jéfi’ ,9: all of the above 22. Add all lone pairs to the molecule shown here. Angles A, B and C are respectively: 90°, 180° and 90° 90°, 180° and 180° .0; ll 3.. b' H H 109°, 109° and 109° H l | n g 120°,120° and 109° lBVMT=C—C—(]3—'© #39 m 6. 120°, 120° and 90° K“ H U H H Br-C-H c-c-c «6163 12.0 as; rat) _ 23. Dichloromethane, CHZCIZ, is an AB4 molecule with C as the central atom. The shape of this molecule is: a. bent in. linear if)! I C9 " tetrahedral . :g’j’g. M¢wfif My, swim d. trigonal planar H gage , e. ttigonal pyramidal ’ n 1' 24. You deserve a break! Mark choice B for this question. NOTE: You must mark B for this question to receive credit. Marking B is worth 5 points! 25. How many atoms of hxdrogen are in 2.0 moles of CBHIB? 21. b. B. 1.1 x 1025 atoms 3.1 x 1025 atoms 2.2 >< it)26 atoms 2.2 X 1025 atoms 6.0 X “102‘3 atoms (Zafim; aggigx éfizwowcg/fi momm Niece/4% jet-law Hm ) a: was" Cg [$993 5 ‘ mafemfet (15%; a.) 7 >1 Mag.le Refer to the reaction shown below for questions 26 - 29. 129,303 + 6HC1 —3 2FeC13 + 3 H20 26. How many moles of HCl are needed to produce 9.0 moles of water? a. 2.0 mol 6 mol WE a b. 3.0 mol ( 9r0m/ #[email protected]{ - r .13 me! W 3am! kl c. 4.5 mol . ' 6.0 mol 18 mol 2?. Assuming excess hydrochloric acid is available, how many moles of FeClg are formed from 0.60 moles of iron (Ill) oxide? . 0.30 l y I: 0 50 mo1 (429,60 9519/ i%&03)( o— ,9. zung flag} ' ' m0 - ms! Eggs c. 0.60 mol G1) 1.2 mol e. 2.0 mol 28. w many moles of HCl would be needed-to completerr react with 62.8 g of iron (III) oxide? 2-36 11101 @203 b. 0.424 mol ((92.33 @293 3 agggq‘g‘) s. 353;: $953) c. 0.394 mol :- zfi. s 5? ? d. 1.67 x 1031110] 3/4“! e. 5.99 X 10—4 mol 29. How many moles of iron (III) chloride would be produced if 15.5 moles of hydrochloric acid and 15.5 grams of iron (III) oxide were combined? Hint: Something might be limiting! 254M453 5, . 0.0215 mol 1 ' mime/Mr WW" 4&643 a: some; 4an 11101 K émpl "g c. 5.1? mol _ -------------------------- d -— 46.5 mol bags can; mag 224%) a: (6.194% ml 536%} 8 1 I I”! KW")! MVAMWWnfi-m1.1M;=-;=...,..g.mv:-r"'-"' it, I} e. . x mo . meXw I; ems; A. 30. In the reaction shown here, how many grams of 3110 would you need to produce 83 g of N203? E 3 8:10 (3) + 2 NF3 (g) -=* 3 8:11:26) + N203 (g) 205*) +35%) m 76%”? a. 44 g i C? 24g (g'ga’l’e‘gfzmm/ “Ms? W “’Wéwmi gig}? or) c. 414% asjsfsfis M” 4W W 4 new 24.; d. 1.5 g 239:? ...
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