To choose the molecule having the higher boiling point and to give a brief account for the intermolecular forces that influenced the boiling point of the corresponding molecule. Concept Introduction: The set of repulsive and attractive force between molecules that result from the polarity between neighboring molecules is represented as intermolecular force. There are four types of intermolecular forces: Hydrogen bonding London dispersion force Ion – dipole force Dipole – Dipole force Ion – dipole force is a strong intermolecular force as it contains both ionic and polar bonds. Hydrogen bond: Hydrogen is bonded to strong electronegative atom like oxygen, nitrogen etc. Dipole – Dipole: This force takes place between two polar compounds. London dispersion force: This force is present in all compounds and is a weak force. As the molecular mass increases the energy required to get over the intermolecular forces increases
To choose the molecule having the higher boiling point and to give a brief account for the intermolecular forces that influenced the boiling point of the corresponding molecule. Concept Introduction: The set of repulsive and attractive force between molecules that result from the polarity between neighboring molecules is represented as intermolecular force. There are four types of intermolecular forces: Hydrogen bonding London dispersion force Ion – dipole force Dipole – Dipole force Ion – dipole force is a strong intermolecular force as it contains both ionic and polar bonds. Hydrogen bond: Hydrogen is bonded to strong electronegative atom like oxygen, nitrogen etc. Dipole – Dipole: This force takes place between two polar compounds. London dispersion force: This force is present in all compounds and is a weak force. As the molecular mass increases the energy required to get over the intermolecular forces increases
Solution Summary: The author explains the four types of intermolecular forces: Hydrogen bonding London dispersion force Ion – Dipole force
Interpretation: To choose the molecule having the higher boiling point and to give a brief account for the intermolecular forces that influenced the boiling point of the corresponding molecule.
Concept Introduction:
The set of repulsive and attractive force between molecules that result from the polarity between neighboring molecules is represented as intermolecular force. There are four types of intermolecular forces:
Hydrogen bonding
London dispersion force
Ion – dipole force
Dipole – Dipole force
Ion – dipole force is a strong intermolecular force as it contains both ionic and polar bonds.
Hydrogen bond: Hydrogen is bonded to strong electronegative atom like oxygen, nitrogen etc.
Dipole – Dipole: This force takes place between two polar compounds.
London dispersion force: This force is present in all compounds and is a weak force.
As the molecular mass increases the energy required to get over the intermolecular forces increases
Draw the complete mechanism for the reaction below. Please include appropriate arrows, intermediates, and formal charges.
(c) The following data have been obtained for the hydrolysis of sucrose, C12H22O11, to
glucose, C6H12O6, and fructose C6H12O6, in acidic solution:
C12H22O11 + H2O → C6H12O6 + C6H12O6
[sucrose]/mol dm³
t/min
0
0.316
14
0.300
39
0.274
60
0.256
80
0.238
110
0.211
(i) Graphically prove the order of the reaction and determine the rate constant of the
reaction.
(ii) Determine the half-life, t½ for the hydrolysis of sucrose.
(III) adsorbent
(b) Adsorption of the hexacyanoferrate (III) ion, [Fe(CN)6] ³, on y-Al2O3 from aqueous
solution was examined. The adsorption was modelled using a modified Langmuir
isotherm, yielding the following values of Kat pH = 6.5:
(ii)
T/K
10-10 K
280
2.505
295
1.819
310
1.364
325
1.050
Determine the enthalpy of adsorption, AadsHⓇ.
If the reported value of entropy of adsorption, Aads Se = 146 J K-1 mol-1 under the above
conditions, determine Aads Gº.