University:
College of Central Florida
Course:
CHM2046 | General Chemistry II
Academic year:

2024
Views:

57

Pages:

8
Author:

Victoria Bean

LbK.C.OVi I-riat icn! '.snd POI-'fiUs .1-. F:;!»iS-: wirii any .!fif!!!iV!Tivi5 >in;i fwp-ofc'-j.Mw 'AV.!,,v.]KH"Ki.;ili--r.i'^iii Chemistry 12 Unit 1-Reaction Kinetics Chemistry 12 Worksheet 1-2 - Potential Energy Diagrams USB THE POTENT!AT, ENERGY DIAGRAM TO ANSWTR THE OTJF.STTONS BFJ.OW: X2Y2. 130 5 >> 2XY 100 E 5 a a. 0 PROGRESS OF REACTION 1. Is the overall reaction as shown exothermic or endothermic? 2. What is the activation energy for the forward reaction? 3, What is the activation energy for the reverse reaction? 4. What is the enthalpy change of reaction ( H) for tiiQ forward reaction? 5. What is the H for the reverse reaction? 6. Is the reverse reaction exothermic or endothermic? 7. Which species forms the activated complex? _ 8. Which species or set of species has the highest potential energy? Worksheet 1-2 Potential Energy Diagrams Page 1 j'DFMAll.HR.COM f'tint .usd vjii-J I'DF illc: as {iniiiils wit]: nuj- itpjilicHTwii, ad siji.-nsc/i'd ;ii:d of unary,f vvwsv.pdtniiidci .coiii Chemistry 12 Unit 1-Reaction Kinetics 9. Which species or set of species has the highest kinetic energy? 10. Which species or set of species has the weakest bonds? 11. Which species or set of species has the strongest bonds? 12. What is H for the reaction: X2Y2 X2 + Y2 ? 13. Which do you think would be,faster, the forward reaction or the reverse reaction? Explain. 14. Which species or set of species has the lowest kinetic energy? 15. Show the AH, the Activation Energy for theforward reaction and the Activation Energy for the reverse reaction on the graph above. 16. As reactant particles approach each other before a collision, the Potential Energy goes while the Kinetic Energy goes , 17. As particles of newly formed products move away from one another, the Potential Energy goes , while the Kinetic Energy goes 18. As reactant molecules approach each other, they exert forces on each other. Thus, as they move together, their speed and their Potential Energy 19. State the meaning of Activated Complex. Worksheet 1-2 Potential Energy Diagrams Page 2 AiLHR.CO.Vi Frint stui v.fii ROf" tik^ is* Kmmk v/ith anj- iippHiatiiri, i:(.VNi5iir'M.xreii and tr.'.; (if [tharce •Av. w.ndfmiuU't^iifn Chemistry 12 Unit 1-Reaction Kinetics 20. Use the following Potential Energy Diagram to answer the questions below: 100 Progress of Reaction a) Determine the Activation Energy for theforward reaction... kJ b) Determine the Activation Energy for the reverse reaction.... kJ c) What is the Enthafyy Change (AH) for the forward reaction?., Id d) What is the Enthatyy Change (AH) for the reverse reaction?.. kJ e) Theforward reaction is thermic. f) The reverse reaction is thermic. g) Which species or set of species forms the Activated Complex? h) Which bond is stronger, A—B or B—C? . Give a reason for your answer. i) Particles from which species or set of species is moving thefastesfl State how you arrived at your answer. Worksheet 1-2 Potential Energy Diagrams Page 3 VOi-'M'UU.-iK.fOM Print jnti 'vih! PW file; as I'niniN with .my opplicatwn, atP'^viiyirod and nca of >.!:jatgc www.fidl'fn.iil^f.iiym Chemistry 12 Unit 1-Reaction Kinetics j) Particles from which species or set of species is moving most slowfyl State how you arrived at your answer. k) The compound "AB" is a gas and the element "C" is a solid. What effect would grmdmg"C,l into a fine powder have on the graph shown here? 21. State the meaning of Activation Energy. 22. What two requirements must be met before a collision between two reactant particles is effective*? 1. 2. 23. Describe what happens to two reactant particles which collide with less energy than the A ctivation Energy. 24. Burning coal (Carbon) is a highly exothermic reaction. However coal, in contact with air at room temperature has such a slow reaction that it is not noticeable. Explain these two facts with the help of a Potential Energy Diagram Potential Energy (KJ) Progress of Reaction Worksheet 1-2 Potential Energy Diagrams Page 4 PDFMAiLBR.COM Prinl and send PDF fdes ns Emails vvilli any sppiicsiioa, ssd-spousoresi end free of charge vwsv.pdfmailer.ecKxi Chemistry 12 Unit J-Reaction Kinetics Worksheet 1-2 - Potential Energy Diagrams USR TUii POTENTIAL KNEkOY DIAGIL4M TO ANSWER THE QUESTIONS BE1.0W X2Y2 130 / -3 / 5 too cc, 50 \ 2XY Xn + o POOSBESS OF REBCTION the overall reaction as shown exothermic or endothermic? (2-^ do yv\ i C 2. What is the activation energy for the forward reaction? 3. What is the activation energy for the reverse reaction? 4. What is the enthalpy change of reaction CdH) for theforward reaction? 5. What is the^H for the reverse reaction? 6. Is the reverse reaction exothermic or endothermic? ; ; ; _ 7. Which species forms the activated contplexl / ; _ 8. Which species or set of species has the highest potential energy? Worksheet 1-2 Potential Energ.> Diagrams Page 1 PD5;M/isLER.CGM F/im ztx} sessi PDF »Mss ss Emits wi:)i myf Rpp!kiiit>n, Ed-spasssa-rsd and frccofdjfts-gc vvww.pdinKiiicr.com Chemistry 12 Unit J-Reaction Kinetics ^ (<><** '' ' 9. Which species or set of species has the highest kinetic energy? 10. Which species or set of species has the weakest bonds? 11. Which species or set of species has the strm<>est bonds? 12. What is Ah for the reaction: X2Y2 -> X2 + Y2 '¦ 13. Which do you think would be/aster, the forward reaction or the reverse reaction? r r .jz Explain. Snttf/fcy- W\/ •' •IcrJdfJ:-.. 'ZZXCL.-...-. . 14. Whicli species or set of species has the lowest kinetic energy? .15. Show the-sgSH, the Activation Energy for thefoneanireaction and the Activation Energy for the reverse reaction on the graph above. 16. As reactant particles approach each other before a collision, the Potential Energy goes LxP, while the Kinetic Energy goes 'Aoyj£: 17. As particles of newly formed products move away from one another, the Potential Energy goes . while the Kinetic Energy goes _--r.. Page 3 PDFMAJLER.COM Frifil aadscrisi PDF fski as Emflils wji!i my flppiicatioo. ad-sponsorcd sirsd free iif charge www.pdfmaiicr.coin Chemislrv 12 Unii S-Reaction Kinetics j) Particles from which species or set of species is moving most slowlyl State how you aiTivcd at your answer. /Uf.< ... •.<- : r'2: -• k) The compound "AS" is a gas and the dement "C" is a solid. What effect would grindiiig"C" into a .fine powder have on the graph shown here? j; r 21. State iiitmeaimg of Activation Energy. ...yT. £^..V -eT:.; ...-x-L:.- . . - two requirements must be met before a collision between two reactant particles is <#¦ LttV? : 1 • ' i r , • .ji L....j.'-. -•>¦ — 23. Describe what happens to two reactant particles which collide with less energy than the Aetmifkw Energy. btfUrV C y-ir 24. Burning coal (Carbon) is a highly exothermic reaction. However coal, m contact with air at room temperature has such a s/w reaction that it is not noticeable. Explain these two facts with die help of a Potential Energy Diagram. s*- Potential Encvuy (Kit /.•? '• -yi. ¦rKC,, :/ Worksheet 1-2 Potential Energy Diagrams Page 4

Potential Energy Diagrams with key.

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