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CHE 1102 Exam 2 Study Guide

by: Kendall Notetaker

CHE 1102 Exam 2 Study Guide CHE 1102

Marketplace > Appalachian State University > Chemistry > CHE 1102 > CHE 1102 Exam 2 Study Guide
Kendall Notetaker

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About this Document

Covers ideal gas laws, intermolecular forces, boiling / freezing points, and vapor pressure
Introduction Chemistry II
Patrick Donoghue
Study Guide
Ideal Gases, Ideal Gas Law, Intermolecular Forces, boiling point, #Chemistry #Chem101 #CovalentCompounds #IonicCompounds #PolarOrNonPolar #MeltingAndFreezingPoint
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This 2 page Study Guide was uploaded by Kendall Notetaker on Tuesday September 13, 2016. The Study Guide belongs to CHE 1102 at Appalachian State University taught by Patrick Donoghue in Fall 2016. Since its upload, it has received 7 views. For similar materials see Introduction Chemistry II in Chemistry at Appalachian State University.


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Date Created: 09/13/16
CHE 1102 Exam 2 Study Guide  Gas Variables o Volume (V)  Liters (L) o Pressure (P)  SI Unit Pascal (Pa) = 1 N/m 2   Common units: atm, torr (mmHg) o Temperature (T)  Kelvin (K)  Absolute temperature is needed o Number of moles (n)  Pressure Unit Conversion o 1 mmHg = 1 torr o 1 atm = 760 torr = 101.325 kPa = 1.01325 bar  How does pressure change? o Change in volume  As volume increases, pressure decreases  As volume decreases, pressure increases o Change in temperature  As temperature increases, pressure increases  As temperature decreases, pressure decreases  How does temperature change with pressure? o If pressure is allowed to be constant, V is proportional to T, P is proportional to T  and PV is proportional to T  Combined Gas Laws o PV/T = constant o P V1/T1= 1 V 2T 2 2   Standard Conditions (STP) o Standard Temp = 0 celsius = 273 K o Standard Pressure = 1atm o Standard Molar Volume = 22.4 L  Types of Intermolecular Forces o Dipole­Dipole: 2 polar molecules act like magnets o Hydrogen Bond: F, N, O have very polar bonds with H that leave an exposed  proton (F, N, O have dense lone pairs) *Hydrogen bonding is the strongest type of intermolecular force*  o Induced Dipole: electron clouds can be squishy and polarized by neighbors, big  atoms induced more than small atoms o Ion Dipole: can be stronger due to persistent full charge, reason for  solubility/insolubility of ionic compounds  Collecting a Gas Over Water o P total gas  water o P = gas  total water *vapor pressures depend only on temperature*  Thermochemistry/Calorimetry o q = mCΔT  q = heat  m = mass  C = specific heat  ΔT = change in temperature (final­initial temp) 


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