



Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
A chemistry 1520 exam focusing on intermolecular forces, crystal structures, and solution properties. It includes short answer questions covering the strength of different intermolecular forces, their association with enthalpy of hydration, and their role in the solubility of substances. The exam also features calculations related to molarity, unit cell dimensions, and boiling point elevation, providing a comprehensive assessment of students' understanding of these key concepts in chemistry. This exam is useful for university students.
Typology: Exams
1 / 5
This page cannot be seen from the preview
Don't miss anything!
Name: KG[ CIRCLE your INSTRUCTOR/LECTURE TIME: McMills 8:35 am CIRCLE the alphabet segment of your last name: AE FL M-R Chemistry 1520 Exam IB Part I. (36 pts) Short Answer.
Paris 9:40 am Sz a. Ofthe IMF (intermolecular forces) listed, which is the WEAKEST? Circle one: dipole-dipole tondon dispersion force H-bonding dipole-induced dipole b. Which IMF Is associated with enthalpy of hydration (AHmya)? Circle one: dipole-dipole London dispersion forces H-bonding dipole-induced dipole
. Which IMF is responsible for O being partly soluble in H0? Circle one: dipole-dipole London dispersion forces H-bonding dipole-induced dipole d. For the compound sulfur hexafluoride, which is the STRONGEST IMF present? Circle one: dipole-dipole London dispersion forces H-bonding dipole-induced dipole February 14, 2025 100 points ion-dipole ion-dipole lon-dipole
. (12 pts) The cubic lattice of a particular ionic compound has the following features: There is ONE CATION {A) at each CORNER of the unit cell, There is ONE CATION (A) in each FACE of the unit cell. There are FOUR ANIONS {X) within the BODY of the unit cell. . The number of cations {A) per unit cell Is:
. The number of anions (X) per unit cell is: Circle one: (^12 3) @ H (^678) The empirical formula of the compound is: Circle one: @ AXy (^) AX3 AXs
. What unit cell do the cations adopt? Circle one: sc bee @
(14 pts) The element tantalum (Ta} adopts a bec unit cell. Glven that the density of Ta is 16.2 g/cm?, what is the radius of a single Ta atom, In cm? Report your answer to 3 significant figures. lue.^ x 2:“"”' (^) * (^) ‘—:‘u"ou( x (^) 8.9 (^) Radlus: o & (^) o "M.I (^) fere————p et 149 xio-Y ., x 3 lew? (^). 359%xlo (^) em? ~ Vs fl.‘ Py a‘J 3.5%94xl0 P03. 3.8gixtle om
Toaeln (^) - (^) S.62°c = (^) Toal pubasia 2.18.$°c ~^ 6.%2°C^ a^ lfl.lo.o'c
Part Ill. Multiple Choice. Write answer on the line provided. (21 pts; 7 @ 3 pts each) A 1. Which of the following lons should have the smallest {least negative) enthalpy of hydration,
a. Cs* b. Rb* ¢, Ba® d. Sr** C 2. Which of the foliowing pairs is arranged with the particles of higher polarizability (^) listed first?
. Which of the following is expected to have the lowest vapor pressure at 350 K?