Homework Answers
Ans :
The heat of vaporization is the amount of heat that is required by the substance in liquid state to get converted into its gaseous state.
If the intermolecular forces between the particles are strong , more energy is required to vaporise the liquid and hence Hvap is higher.
The molecular mass also affects Hvap significantly. When the weight of molecule and its size increases its london dispersion forces increases. The larger molecules are more denser and hence higher energy is required to vaporise the, So as the molecular mass increases , it also increases its Hvap.
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2. Considering that intermolecular forces are a big component to what the AHvap will be for a given substance, pred...
Question 16 (1 point) Which substance below has the weakest intermolecular forces? BY2, AHvap=29.2 kJ/mol A2X,...
Question 16 (1 point) Which substance below has the weakest intermolecular forces? BY2, AHvap=29.2 kJ/mol A2X, AHvap= 41.2 kJ/mol C3X2, AHvap= 33.2 kJ/mol DX2, AHvap= 25.2 kJ/mol EY3, AHvap= 20.5 kJ/mol Question 3 (1 point) The spheres below represent atoms of Si, Ge,C, and Sn (not necessarily in that order). r=110 pm - 140 pm T-75 pm (a) r=120 pm (c) Which one of these spheres represents an atom of Si? sphere (c) sphere (b) sphere (a) sphere (d) KYC...
What is the relationship between critical temperature and intermolecular forces? Predict which substance in each of...
What is the relationship between critical temperature and intermolecular forces? Predict which substance in each of the following pairs would have the greater IMF a)CO2 or OCS b)PF3 or PF5 c)SF2 or SF6 d)SO3 or SO2
Intermolecular forces (IMPs) are the forces of attraction (or sometimes repulsion) that act between neighboring molecules...
Intermolecular forces (IMPs) are the forces of attraction (or sometimes repulsion) that act between neighboring molecules All IMPs are based on etectrostatic interaction and are relatively weak compared to the Intramolecular forces that hold the atoms within a molecular together. In today, workshop you will practice to identify IMFs and predict their effect on boiling point melting point, vapor pressure and enthalpy of vaporisation (Delta Hvap). The Delta Hvap for a given molecule is the energy required to transform a...
INTERMOLECULAR FORCES INTRODUCTION LEARNING OBJECTIVES To relate the effecet of intermolecular fo...
INTERMOLECULAR FORCES INTRODUCTION LEARNING OBJECTIVES To relate the effecet of intermolecular forces on relative melting points and vapour pressures of some organic substances THEORY Weak attractive forces that occur between individual molecules in substances are called intermolecular forces. These include London dispersion forces, dipole-dipole forces and hydrogen-bonding forces. Collectively, the three types of intermolecular forces are referred to as Van der Waals forces. These attractive forces are much weaker than the chemical bonds between atoms in a molecule. Note that...
In class work. Help? Date Lab Partner EXPERIMENT 12 Intermolecular Forces substance | tmax (°C) |...
In class work. Help?
Date Lab Partner EXPERIMENT 12 Intermolecular Forces substance | tmax (°C) | tmin (°C) ?T (tmax-tmin) Ethanol l-propanol Predicted Explanation I-butanol npentane Methanol n-hexane The molecular weights for n-pentane and 1-butanol are similar but the liquids have significantly different ?? values. Explain why the values are different I. 2. Which of the alcohols studied has the strongest intermolecular forces of attraction? Explain
What state of matter has the weakest intermolecular forces for the same substance? Explain please a....
What state of matter has the weakest intermolecular forces for the same substance? Explain please a. gas b. liquid c. solid d. they are all the same
no intermolecular forces in this substance Question 2 Which of the following compounds will hydrogen bond...
no intermolecular forces in this substance Question 2 Which of the following compounds will hydrogen bond with water (HO)? Select all that apoly 0 Cala НЕ CH₂O HCN Question 3 Which of the following will have the highest boiling point?
What type of intermolecular bonding is responsible for waters strong intermolecular forces Name two of the...
What type of intermolecular bonding is responsible for waters strong intermolecular forces Name two of the five parts of the kinetic molecular theory of matter When a gas is heated in a sealed rigid container what happens to the pressure of the gass? In terms of collision s between gas particles and the walls of the container, what are the 2 reasons why heating the gas does this to the pressure. A balloon placed in cold liquid nitrogen will begin...
3. What is necessary for an intermolecular hydrogen bond? 4. What intermolecular forces are found in...
3. What is necessary for an intermolecular hydrogen bond? 4. What intermolecular forces are found in each molecule CO N2 CH,OH 5. Which substance has the highest boiling point? Why? СО CH,OH N2 6. How many compounds, of the ones listed below, have hydrogen bonding, circle them? (Hint: draw the molecules) CH3CH2)2NCH2CH3 CH3CH2NHCH.CH CH3CH2CH2NH2
19:39 The Remaining 10 4 points What kinds of intermolecular forces are present in each substance?...
19:39 The Remaining 10 4 points What kinds of intermolecular forces are present in each substance? London Forces Only London Forces and Dipole-Dipole Forces No Answers Chosen No Answers Chosen London Forces and Hydrogen Bonds Hydrogen Bonds Only ! H20 II CS2 No Answers Chosen Dipole-Dipoles Only No Answers Chosen Possible answers Br2 1 BC13 NCIS ІІ Не Інсі
Question 16 (1 point) Which substance below has the weakest intermolecular forces? BY2, AHvap=29.2 kJ/mol A2X, AHvap= 41.2 kJ/mol C3X2, AHvap= 33.2 kJ/mol DX2, AHvap= 25.2 kJ/mol EY3, AHvap= 20.5 kJ/mol Question 3 (1 point) The spheres below represent atoms of Si, Ge,C, and Sn (not necessarily in that order). r=110 pm - 140 pm T-75 pm (a) r=120 pm (c) Which one of these spheres represents an atom of Si? sphere (c) sphere (b) sphere (a) sphere (d) KYC...
Intermolecular forces (IMPs) are the forces of attraction (or sometimes repulsion) that act between neighboring molecules All IMPs are based on etectrostatic interaction and are relatively weak compared to the Intramolecular forces that hold the atoms within a molecular together. In today, workshop you will practice to identify IMFs and predict their effect on boiling point melting point, vapor pressure and enthalpy of vaporisation (Delta Hvap). The Delta Hvap for a given molecule is the energy required to transform a...
INTERMOLECULAR FORCES INTRODUCTION LEARNING OBJECTIVES To relate the effecet of intermolecular forces on relative melting points and vapour pressures of some organic substances THEORY Weak attractive forces that occur between individual molecules in substances are called intermolecular forces. These include London dispersion forces, dipole-dipole forces and hydrogen-bonding forces. Collectively, the three types of intermolecular forces are referred to as Van der Waals forces. These attractive forces are much weaker than the chemical bonds between atoms in a molecule. Note that...
In class work. Help?
Date Lab Partner EXPERIMENT 12 Intermolecular Forces substance | tmax (°C) | tmin (°C) ?T (tmax-tmin) Ethanol l-propanol Predicted Explanation I-butanol npentane Methanol n-hexane The molecular weights for n-pentane and 1-butanol are similar but the liquids have significantly different ?? values. Explain why the values are different I. 2. Which of the alcohols studied has the strongest intermolecular forces of attraction? Explain
no intermolecular forces in this substance Question 2 Which of the following compounds will hydrogen bond with water (HO)? Select all that apoly 0 Cala НЕ CH₂O HCN Question 3 Which of the following will have the highest boiling point?
3. What is necessary for an intermolecular hydrogen bond? 4. What intermolecular forces are found in each molecule CO N2 CH,OH 5. Which substance has the highest boiling point? Why? СО CH,OH N2 6. How many compounds, of the ones listed below, have hydrogen bonding, circle them? (Hint: draw the molecules) CH3CH2)2NCH2CH3 CH3CH2NHCH.CH CH3CH2CH2NH2
19:39 The Remaining 10 4 points What kinds of intermolecular forces are present in each substance? London Forces Only London Forces and Dipole-Dipole Forces No Answers Chosen No Answers Chosen London Forces and Hydrogen Bonds Hydrogen Bonds Only ! H20 II CS2 No Answers Chosen Dipole-Dipoles Only No Answers Chosen Possible answers Br2 1 BC13 NCIS ІІ Не Інсі
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