Answer Q18, 19, 20, 21 (B) 364 (C) + 800 ) -276fast(A) -800HOl + Hn) + )What type of reactions is this?Acid-base9.What method could be used to obtam the14.value +590 kJ?(A)(BY(C)(D)(A)Electrolytic methodElectron bombardment methodMass spectrometryBomb calorimetryWhich statenent among the followingCondensationPrecipitationRedoxWhich of the following equations represents(B)(C)15.correctly the rate-determining step?(AT10.concerning CaCI(s) is true?(A) lrcontains chlorine in its highest oxidation state(B(C)oxjdation state(D)(B)Hag) + Ola) - HOI(aq)It is unstable with respect to CaCI (s)It contains calcium in its most usual(C)HOlaq) + Han) + ag) - H,0u) + Iz(aq)(D)21an) + H202(aq) + 2Ha) Iz(aq) +2H,00)It is the usual chloride of calciumThe energy value 800k is called16.Which of the following conclusions about11.(A) lonisation energy(B)O Lattice energy(D) Hydration energythe rate of the reaction can be drawn from theover-all equation of the reaction?Enthalpy of formationRate is proportional to the concentration of(A)iudide ionThe equation for the preparation of Teflon(13)Rate is proportional to the concentration of12.from tetrafluoroethene isn(CF, = CF2) - (-CF, - CF-)nFrom this equation, it can be deduced that "Teflon"(A)Has a different empirical formula fromtetrafluoroetfiene(B) Can decolourise bromine water(C) Is a highly reactive compoundDTIS an addition polymertıydrogen peroxide(C)the hydrogen ion(D)the jodide ions and the hydrogen peroxide.Fate is proportional to the concentration ofRate is proportional to the concentration ofWhich one of the following methods couldNOT be used to determine the rate of this reaction?Measurement of the concentration of17.(A)hydrogen ions by a suitable titration methods(B)of the solution13.The systematic name for the compoundMeasurement of the electrical conductivityshown belowCHICH(OH)CH(CH)CH IsLAT(B)(C)(D)Measurement of the mass of water fomed3-methylbutan-2-ol3-methlylbutyl alcohol2-hydroxypentane2-methyl hexan-1-ol(C)by absorption onto anhydrous calcium chloride(D)intensity of the solutionMeasurement of the change in colourQuestions 14-17The reaction of iodide ions with hydrogen peroxidein acid solution can be represented by the equation21a9) + H202{aq) + 2Hag) Iz(an) + 2H20(1)The reaction is believed to occur stepwise as shownbelowQuestions 18-21In a laboratory experiment to determine theenthalpy change (AH) for the reaction between zincand aqueous silver nitrate, the data below wereobtainedMass of zine (RAM = 65) in excess = 1.00gValume of 0 20 mol dm aqueous silver nitrate =aq) + H,02(a4) H20 +01(aq)fastHOl(aq)20.0 cmTeinperature rise =8.8°CHam + 0) (A)(B) (D)Which of the following is the most suitableQuestions 27 to 31 concern the lollowing organiccompounds(A) THOOCCHCHCOOH(C) CllEN',CI18.vessel in which to perfom the experiment?(A)(B)(C)Conical tlaskEvaporating basinGlass beakerPolythene flask(B) CCHOHCHCH.CCH(D)Seleet from A to D the compound that couldGive a positive iodoform test19.The number of moles of silver that would he0.c6dn3 27.(A)00llprecipitated is02 Md(C)(D)0.20 x 50.0 S1000(A)0.20 x 50.0 1828.Exhibit geometric isomerism020x500020x50(D)1000x2(C)(D)(B)React with phenol to give a coloured(C)AT29.What would be the temperature rise if 25.0cm of 0.20mol dm of silver nitrate vere used in20.compound.(D)(B) C)Haye optical isomers(C)React with ammoniacal Copper ti) chloridelo form a red-brown precipitate.(C) A)the experiment? 2 e 6 S30.2 2°C (BT4 4C(C) 8.8°C (D) 17.6°CThe enthalpy change AlH (in kInol y for thereaction given the specifie heat capacity of thesolution as 4.2JcmC- is expressed as(A)(A)(D)21.31(A) (B)Questions 32and 33 concem on the followinggraphs50.0x4.2XRB(A1-50.0 x 4.2 x 8.8SO OND 20IC) +50.0 x 4,2 x 8.8 (D)50.0-0.20On licating, 131g of calcium carbonate gave22.0.69g of calcium bxide, CaO.(Ca=40, C=12, O=16)CaCOs) CaOs) + CO 8)The percenlage yield for this reaction isTA! 567D1 106 46Qrestions 23-26 concern I moldm solutions ofA) Lthanoie acid (B) Sodium hydroxide(CJAmimoniaSelect from A to D the substance, which has theproperny indicated23.94 52 (C)56.00(D)Hydrochloric acidThe solution that has the lowest pFl value(C) )The solution which when added tocoppert il) sulphate gives a pale-blue precipitate.When excess of the solution is added to theprecipitate, a deep blue solution results(D)T. nlutire urhich contains the least(A)(B)Select from A to D the graph thatCould be the variation of the concentrationof a reactant with time as the reaction proceeds24.32.(B)Could represent the variation of pressurewith volume for a given nass of gas at constant(C)(D)(A)(B)ses33.Tuniber ol hydrogen ons(B)(C) (D)The solution that is a Lewis base(B)26.34.In the reaction.

Answered: Image /qna-images/answer/ca578071-5243-414d-861b-ed1c90408063.jpg

18. Which of the following is the most suitable vessel in which to perfom the experiment? (A) Conical flask (B) Evaporating basin (C) Glass beaker (D Polythene flask 19. The number of moles of silver that would be Selce precipitated is (A) 0.20 x S0.0 48 (A) Ques comp (C) C 02 Md. 0.c63 27. (A) 28. 0.20 x 50.0 1000 0.20x50 0 (C) 0.20x50 (D) AT 29. 1000x2 20. What wvould be the temperature rise if 25.0 cm of 0.20mol dnm of silver nitrate were used in comp- the experitient?0. 5/ (A) 22°C (BT 4 4C(C) 8.8°C (D) 17.6°C The enthalpy change All (in kJnmol 'y for the rcaction given the specitic heat capacity of the solution as 4.2JcmC-is expressed as 30. 21. (A) 31. lo fon (A) (AI-50.0 x 4.2 x 8.8 T 50.0x4.2x8B So ONO 20 Ques eraph: (C) +50.0 x 4.2 x 8.8 (D) 14 500-0.20 ueL carhonate 22 timg

18. Which of the following is the most suitable vessel in which to perfom the experiment? (A) Conical flask (B) Evaporating basin (C) Glass beaker (D Polythene flask 19. The number of moles of silver that would be Selce precipitated is (A) 0.20 x S0.0 48 (A) Ques comp (C) C 02 Md. 0.c63 27. (A) 28. 0.20 x 50.0 1000 0.20x50 0 (C) 0.20x50 (D) AT 29. 1000x2 20. What wvould be the temperature rise if 25.0 cm of 0.20mol dnm of silver nitrate were used in comp- the experitient?0. 5/ (A) 22°C (BT 4 4C(C) 8.8°C (D) 17.6°C The enthalpy change All (in kJnmol 'y for the rcaction given the specitic heat capacity of the solution as 4.2JcmC-is expressed as 30. 21. (A) 31. lo fon (A) (AI-50.0 x 4.2 x 8.8 T 50.0x4.2x8B So ONO 20 Ques eraph: (C) +50.0 x 4.2 x 8.8 (D) 14 500-0.20 ueL carhonate 22 timg

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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CHM 102 3. The figure below shows a Beer's Law plot for the absorbance of 5 different known solutions of crystal violet along with the equation for the linear regression line (trend line). a. For the equation of the line, what do "x" and "y" each represent? X: y: Absorbance 0.700 0.600 0.500 0.400 0.300 0.200 0.100 0.000 Beer's Law Plot for Crystal Violet y = 6.66E+04x-1.51E-02 R²=9.99E-01 0.00E+00 2.00E-06 4.00E-06 6.00E-06 8.00E-06 1.00E-05 1.20E-05 [crystal violet] (M) b. A sample containing an unknown concentration of crystal violet has an absorbance of 0.231. Calculate its crystal violet concentration using the linear regression equation in the figure. Show your calculation.
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1.10 In which type of cryoEM is the sample tilted at ±70° relative to the direction of the incident electron beam in order to collect an image at each tilt angle and reconstruct the 3D image of the sample? O Single particle EM Transmission EM O Tomography
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3. 11 100 TRANSMETTANCE D C8H9CIO 4000 10 HSP-01-151 9 3000 8 2:2 7 2000 6 : 5 ppm 2 NAVENUMBERal 4 3 1500 : Vala 2 1000 3 1 0 500 200 180 COS-04-715 DEPT-90 DEPT-135 160 140 120 بلد لد 100 ppm 80 60 40 20 0
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The Ksp of Al(OH)3 is 4.6*10-33, and the Ksp of Zn(OH)2 is 3*10-17 1) Can Al3+ be separated from Zn2+ by the addition of an NaOH solution to an acidic solution that contains 0.350 M Zn2+ and 0.150 M Al3+ ? If can't leave answer fields in parts 2, 3 empty. (Answer as yes or no) 2) At what hydroxide ion concentration will the second cation precipitate? (Answer must be mol/L) 3) What is the concentration of the other cation at that hydroxide ion concentration? (Answer must be mol/L)
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A