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Exam 1 Study Guide

by: Kylie McLaughlin

Exam 1 Study Guide Chem 211

Kylie McLaughlin
General Chemistry II
Dr. James R Horn

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About this Document

Here's a study guide for exam 1! I tried to cover as much material as I could, I hope it is helpful!
General Chemistry II
Dr. James R Horn
Study Guide
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This 6 page Study Guide was uploaded by Kylie McLaughlin on Monday September 14, 2015. The Study Guide belongs to Chem 211 at Northern Illinois University taught by Dr. James R Horn in Fall 2015. Since its upload, it has received 114 views. For similar materials see General Chemistry II in Chemistry at Northern Illinois University.


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Date Created: 09/14/15
Chemistry 211 Exam Study Guide 1 Part 1 De nitions Word Bank Intermolecular Intramolecular Gas Liquid Solid Sublimation Melting Va porization Freezing Condengng Depog on Exothermic Endothermic Triple point Critical point Hydrogen bond Polarizability Simple cubic Bodycentered cubic Facecentered cubic 1 2 are bonding forces these forces exist within each molecule and they in uence chemical properties of the substance conforms to shape and volume of container high compressibility and high ability to ow is a change from a liquid to a solid increases down a group and decreases left to right across a penod is a change from a gas to a solid is a change from a solid to a liquid a dipoledipole intermolecular force occurs when a H atom is bound to a small highly electronegative atom with lone pairs of electrons 8 is when the two densities become equal and phase boundaries disappear on a phase diagram 9 process that occurs with a release of heat to the surroundings and has a decrease in enthalpy 10 is when all three phases are in equilibrium on a phase diagram 11 is when there is 1 atom per unit cell 12 is the change from a solid to a gas 13 are the nonbonding forces these forces exist between molecules and they in uence the physical properties of the substance 14 maintains its own shape and volume almost no compressibility and almost no ability to ow 15 is when there is 4 atoms per unit cell 16 conforms to shape of container volume is limited to surface very low compressibility moderate ability to ow 17 is a change from a gas to a liquid 18 is when there is 2 atoms per unit cell 19 is a change from a liquid to a gas 20 is the relative ability of a bonded atom to attract shared electrons generally increases up a group and across a period 21 is a process that occurs with an absorption of heat from the surroundings so there is an increase in enthalpy 22 is the heatenergy released or absorbed Part 2 Conceptual Problems 23Which is the strongest interparticle force in each of the following substances Circle correct answer a CH3OH dispersion Hbond dipoledipole b CC4 dispersion Hbond dipoledipole c C2 dispersion Hbond dipoledipole 24Which is the strongest interparticle force in a sample of H2504 Circle correct answer Dispersion Hbond dipoledipole 25Rank the following compounds in order of decreasing viscosity at a given temperature a CH3CH2CH20H b HOCH2CHOHCH20H c HOCH2CH20H 26What types of crystal lattice does each metal form Atomsunit cell is included Circle correct answer a Ni4 simple cubic bodycentered cubic facecentered cubic b Cr2 simple cubic bodycentered cubic facecentered cubic c Ca4 simple cubic bodycentered cubic facecentered cubic 27What force prevents ice cubes from adapting the shape of their container Circle correct answer Intermolecular intramolecular 28Which forces are overcome when a liquid is vaporized Circle correct answer Intermolecular intramolecular 29Which forces are overcome when gaseous water is converted to hydrogen gas and oxygen gas Circle correct answer Intermolecular intramolecular 30What is the phase change that occurs when a diamond lm forms on a surface from a gaseous carbon atoms in a vacuum a Melting b Condensation c Evaporation d Deposition 31What is the strongest type of intermolecular force between solute and solvent in Cus in Ags Circle correct answer Dipoledipole metallic bonding Hbond 32What is the strongest type of intermolecular force between solute and solvent in CH3CIg in CH3OCH3g Circle correct answer Dipoledipole iondipole dispersion 33What is the strongest type of intermolecular force between solute and solvent in CH3CH3g in CH3CH2CH2NH2I Circle correct answer Hbond dipoledipole dipole induced dipole 34Which member of each of the following pairs is more soluble in diethyl ether Circle correct answer a NaCls or HCIg b H20 or CH2CHOI c MgBr2s or CH3CH2MgBrs 35Which member of each of the following pairs is more soluble in water Circle correct answer a CH3CH20CH2CH3I or CH3CH20CH3g b CCI4I or CH2CI2I c Cyclohexane or tetrahydropyran 36Which ion in each of the following pairs has the lower ratio charge to volume Circle correct answer a Br or I b Sc3 or Ca2 c K or Br d 52 or Cl e Sc3 or AI3 f SO42 or CIO4 g Fe3 or Fe2 h K or Ca2 37Circle whether the entropy of the system increases decreases or stays the same in each of the following process a Gasoline burns in a car engine increases decreases stays the same b Gold is extracted and puri ed from its ore increases decreases stays the same c Ethanol dissolves in 1proponal increases decreases stays the same Part 3 Math Problems 38From the data below calculate the total heat in J needed to convert 1500 g of ice at 925 C to liquid water at 500 C Melting point is 1 atm 00 C Cliquid 4184Jg C AHfus 602 kJmol Csolid 209 Jg C 39Solve for vapor pressure A liquid has a AHvap of 355 kJmol and a boiling point of 124 C at 1 atm What is its vapor pressure at 105 C 40Use the following data to calculate the combined heat of hydration for the ions in sodium acetate NaC2H302 given AHlattice 763 kJmol and AHsoln 173 kJmol 41List the following from highest energy to lowest energy Hbond ioninduced dipole dispersion iondipole ionic dipoledipole dipoleinduced dipole 42Calculate the amount of heat absorbed when 54 g of H20 I initially at 25 C is increased by 20 C cwater 754Jmol C 43Using Henry39s Law constantkH for 02 in water at 20 C is 128 x 10quot3 molLatm How many grams of 02 will dissolve in 600 L of H20 that is constant with air where the partial pressure of 02 is 209 atm Answer Key 1 lntramolecular Gas Freezing Polarizability Depogdon Melting Hydrogen bond Critical point Exothermic 10Triple point 11Simpe cubic 12Sublimation 13ntermoecuar 14Soid 15Facecentered cubic 16Liquid 17Condensing 18Bodycentered cubic 19Vaporizing 20Eectronegativity 21Endothermic 22Enthapy 23 a hydrogen bond b dispersion c dispersion 24Hydrogen bond 25b c a 26a facecentered cubic b bodycentered cubic c facecentered cubic 27intermoecuar 28intermoecuar 29intramoecuar 30deposition 31metaic bonding 32dipoedipoe 33dipoeinduced dipole 34a HClg b CH3CHOI c CH3CH2MgBrs 35a CH3CH20CH3g b CH2C2 c tetrahydropryan 36a b Ca2 c Br d CI e Sc3 f CIO4 g Fe2 h K 37a increases b decreases c increases 38850202J 3958 atm 40746 kJmol 41onicgt iondipoegt Hbondgt dipoedipoegt ioninduced dipoegt dipole induced dipoegt dispersion 425 k 430514 g 02 vm eweww


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