CHEM 210 FINAL 100% VERIFIED UPDATE 2023/2024

CHEM 210 FINAL 100% VERIFIED UPDATE 2023/2024 The hydrides of group 5A are NH3, PH3, AsH3, and SbH3. Arrange them from highest to lowest boiling point. - ANSWER Highest: Nh3 SbH3 AsH3 PH3 What is the strongest type of intermolecular force present in H2? - ANSWER Dispersion Identify the compound that does not have dipole-dipole forces as its strongest force. - ANSWER Co2 Which of the following must be overcome during the boiling of acetonitrile, CH3CN? 1. dispersion forces 2. dipole-dipole forces 3. hydrogen bonds - ANSWER 1 and 2 Place the following compounds in order of decreasing strength of intermolecular forces. I. CH3CH2CH2CH2CH2CH3 II. (CH3)3CCH3 III. (CH3)3CCH2CH3 - ANSWER IIIIII What type of intermolecular force causes the dissolution of KF in water? - ANSWER Ion-dipole force What Inter molecular forces are present in: HBr - ANSWER dispersion forces and dipole-dipole forces What Inter molecular forces are present in: CH3COOH - ANSWER dispersion forces, dipole-dipole forces and hydrogen bonding What Inter molecular forces are present in: Br2 - ANSWER only dispersion forces What Inter molecular forces are present in: He - ANSWER only dispersion forces Based on the expected intermolecular forces, which noble gas has the highest boiling point? Ar Ne Xe Kr - ANSWER Xe Choose the substance with the lowest surface tension. C6H6 CH3CH2CH2CH3 CH3OH H2O (CH3)2CO - ANSWER CH3CH2CH2CH3 Place the following substances in order of decreasing vapor pressure at a given temperature. PF5 BrF3 CF4 - ANSWER CF4 PF5 BrF3 Choose the substance with the lowest vapor pressure at a given temperature. Ar CO2 CaI2 BF3 PF5 - ANSWER Cal2