Recitation Worksheet Twelve Olivia Beavers UGA ID Name Textbook Chemistry Chemical Reactivity by John C Kotz Paul M Treichel John R Townsend David Treichel 11th Edition Copyright 2024 Instructions Otb71748 This recitation worksheet covers Ch 8 8 8 10 9 1 Please enter your first and last name as it appears on the eLC roster do not use a nickname that is not reflected in eLC Your UGA myID is a combination of letters and numbers example Dr Seivert s MyID is mds73312 Do not use your 81x number Your completed worksheet has to be submitted to Gradescope You have multiple options for submission o You may use an app to annotate the worksheet by placing your answers in the answer boxes and showing your work when appropriate Afterward submit the worksheet to Gradescope You will not need to upload anything to eLC o You may print out the worksheet write your answers in the answer boxes and show your work on it when appropriate Afterward convert the worksheet to a PDF and submit to Gradescope You will not need to upload anything to eLC If you do not have access to a printer you may type your answers directly into the worksheet PDF and then submit it to Gradescope Write your work on separate sheets of paper convert them to a PDF and upload to the appropriate dropbox on eLC o There is a Gradescope app available for both iOS and Android devices that allows you to scan and submit your printed work or you can submit your fillable PDF directly o The following criteria must be met to be eligible for full credit o You must make sure the pages are in the correct order and have the same layout as the original worksheet when submitting to Gradescope regardless of your submission type o Answers must be written in the corresponding answer boxes o You must show your work when appropriate This worksheet is due no later than 9 00 AM on the Saturday of the recitation A periodic table and formula sheet are attached to the end of this worksheet Please keep these attached to your worksheet in the correct order when submitting to Gradescope week 1 Consider a hypothetical molecule MX4 which has a square planar molecular geometry How many lone pairs are on the central atom M of this molecule The terminal atoms X have three lone pairs each Answer by using an integer e g 0 1 etc 2 2 Which of the following statements below are true regarding the molecule below which is illustrated incorrectly Select any that apply and answer using capital letters with no spaces e g ABCDE Hint the molecular geometry shown below is not a standard geometry you have learned CG A The correct molecular geometry should be square planar B The correct electron geometry should be square planar C The correct molecular geometry should be seesaw D The correct electron geometry should be seesaw E The lone pair should be in the axial position F The lone pair should be in the equatorial position G The lone pair may be in the axial or equatorial position because electron pair repulsions are minimized in either case Use the following options below to answer ALL parts of questions 3 and 4 Please also be sure to include this page in your Gradescope submission Electron molecular geometries A Linear B Trigonal planar C Tetrahedral D Trigonal bipyramidal E Octahedral F Bent G Seesaw H T shaped I Square pyramidal J Square planar K Trigonal pyramidal Bond angles A 90 B 109 5 C 109 5 D 120 E 120 F 180 3 Consider the molecules below all of which are illustrated incorrectly Determine the correct molecular geometry for each and provide the corresponding letters in the boxes below using the options on page 3 I II III K F J 4 Determine the electron and molecular geometries of the molecules or ions below then determine the bond angle s Write the corresponding letters in the boxes below using the options on page 3 Molecule or Ion Sulfur difluoride Electron Geometry Molecular Geometry Bond Angle s BF2 ICl3 BrF5 TeF4 C B D E D F F H I 6 B D AF A DA I II III IV V 5 In the alternate universe of Flatland everything is in two dimensions What is the bond angle in a molecule that has five bonding groups and zero lone pairs Report your answer in standard notation and two significant figures 72 degrees 6 Which statement s is are true about molecular polarity B A Molecules are always nonpolar if all of the terminal atoms are identical B T shaped molecules are always polar C Linear molecules are always nonpolar D More than one of the above are true E None of the above are true 7 The following electrostatic potential map has very little to no color difference It shows a molecule B A Polar B Nonpolar C Ionic D Stoichiometric D P 8 Label the following molecules as P polar or NP nonpolar Write the corresponding letters in the boxes below I CH3COOH II SF4 III SCl6 IV SCl5Br V AsH3 NP D P 9 Which of the following molecules is predicted to have a net dipole moment Select any that apply and answer using capital letters with no spaces e g ABCDE BCD A CF4 B SO3 C NH3 D H2O E CO2 10 Based on electronegativity trends in the periodic table predict which of these compounds will have the greatest ionic character in its bonds A H2O B CaO C RbF D HCl 11 Arrange the bonds in order of decreasing bond length A C N C N C P B C N C P C N C C P C N C N D C N C P C N 12 Which of the following would be the strongest bond based on the relationship between bond length and strength F A C C B C C C C N D C N E C O F C O 13 One of the equivalent best resonance structures of a hypothetical molecule MX4 is provided below What is the bond order for the M X bond pointed out by the red arrow in this molecule E A 1 B 1 25 C 1 5 D 2 E The bond order rapidly switches from being either 1 or 2 F There is not enough information to determine this 14 Which of the following statements is true A A Energy is required to break bonds B Energy is released from breaking bonds C Energy is not exchanged from breaking bonds D Whether energy is required for or released by breaking bonds depends on the exact bond broken 15 Using the table of average bond energies below the H for the reaction is kJ mol Report your answer in standard notation and two significant figures 82 kJ mol C2H4 HCN CH3CH2CN C C 839 C H 413 C N 615 C N 891 Bonds Energies kJ mol C C 348 C C 614 Answer questions 16 18 using the potential energy diagram for the …