Novemeber 2010 Chemistry Hl Ib Exam

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N09/4/CHEMI/HPM/ENG/TZ0/XX+

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CHEMISTRY HIgHER lEvEl PaPER 1 Tuesday 3 November 2009 (afternoon) 1 hour INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question, choose the answer you consider to be the best and indicate your choice on

the answer sheet provided. • The periodic table is provided for reference on page 2 of this examination paper.

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16 pages © International Baccalaureate Organization 2009

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1 6 7 0 2 He 4.00 5 B 10.81 6 C 12.01 7 N 14.01 8 O 16.00 16 S 32.06 33 As 74.92 50 Sn 118.69 81 82 Tl Pb 204.37 207.19 51 Sb 121.75 83 Bi 208.98 34 Se 78.96 15 P 30.97 14 Si 28.09 32 Ge 72.59 13 Al 26.98 24 Cr 52.00 42 Mo 95.94 74 W 183.85 80 75 76 77 78 79 Re Os Pt Au Hg Ir 186.21 190.21 192.22 195.09 196.97 200.59 43 Tc 98.91 48 44 45 46 47 Cd Ru Rh Pd Ag 101.07 102.91 106.42 107.87 112.40 49 In 114.82 25 Mn 54.94 26 Fe 55.85 27 Co 58.93 28 Ni 58.71 29 Cu 63.55 31 Ga 69.72 30 Zn 65.37 9 F 19.00 17 Cl 35.45 35 Br 79.90 52 53 Te I 127.60 126.90 84 Po (210) 85 At (210) 10 Ne 20.18 18 Ar 39.95 36 Kr 83.80

2 3 4 5

The Periodic Table

1 H 1.01

Atomic Number

3 Li 6.94

4 Be 9.01

Element

Atomic Mass

11 Na 22.99

12 Mg 24.31

19 K 39.10

20 Ca 40.08

21 Sc 44.96

22 Ti 47.90

23 V 50.94

2

37 Rb 85.47

38 Sr 87.62

39 Y 88.91

40 Zr 91.22

41 Nb 92.91

54 Xe 131.30 86 Rn (222)

56 57 † 72 55 Ba La Cs Hf 132.91 137.34 138.91 178.49

73 Ta 180.95

87 Fr (223) 60 Nd 144.24 92 U 238.03 93 Np (237) 94 Pu (242)

88 Ra (226)

89 ‡ Ac (227) 66 61 62 63 64 65 Dy Pm Sm Tb Eu Gd 146.92 150.35 151.96 157.25 158.92 162.50 95 Am (243) 96 Cm (247) 97 Bk (247) 98 Cf (251) 67 68 Ho Er 164.93 167.26 99 Es (254) 100 Fm (257) 69 Tm 168.93 101 Md (258) 70 71 Lu Yb 173.04 174.97 102 No (259) 103 Lr (260)



58 Ce 140.12

59 Pr 140.91

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90 Th 232.04

91 Pa 231.04

3– 1. Whichcoefficientswouldbalancethisequation?

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__ MnO 2 + __ HCl → __ MnCl2 + __ Cl2 + __ H 2 O MnO2 A. B. C. D. 1 1 1 1 HCl 2 3 4 4 MnCl2 1 1 1 1 Cl2 1 1 1 2 H2O 1 1 2 2

2.

Whatvolumeofcarbondioxide,indm3understandardconditions,isformedwhen7.00gofethene (C2 H 4 , M r = 28.1)undergoescompletecombustion? A. 22.4 × 28.1 7.00 22.4 × 7.00 28.1 2 × 22.4 × 28.1 7.00 2 × 22.4 × 7.00 28.1

B.

C.

D.

3.

Whatwillbetheconcentrationofsulfateionsinmoldm–3when0.20molofKAl(SO4)2isdissolved inwatertogive100cm3ofaqueoussolution? A. B. C. D. 0.2 1.0 2.0 4.0

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Turn over

4– 4.

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Thevolumeofanidealgasat27.0 °Cisincreasedfrom3.00dm3to6.00dm3.Atwhattemperature, in°C,willthegashavetheoriginalpressure? A. B. C. D. 13.5 54.0 327 600

5.

Whichgivesthecorrectorderoftheseprocessesinamassspectrometer? A. B. C. D. ionization ionization deflection acceleration acceleration deflection deflection ionization

acceleration ionization deflection acceleration

6.

Betweenwhichionizationenergiesofboronwilltherebethegreatestdifference? A. B. C. D. Between1stand2ndionizationenergies Between2ndand3rdionizationenergies Between3rdand4thionizationenergies Between4thand5thionizationenergies

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5– 7. Whathappenswhensodiumisaddedtowater? I. II. Agasisevolved Thetemperatureofthewaterincreases

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III. Aclear,colourlesssolutionisformed A. B. C. D. IandIIonly IandIIIonly IIandIIIonly I,IIandIII

8.

Whichspecieshasthelargestradius? A. B. C. D. Cl– K Na+ K+

9.

Whichprocessisresponsibleforthecolourofatransitionmetalcomplex? A. B. C. D. Theabsorptionoflightwhenelectronsmovebetweensorbitalsandd...
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