Simulation of Vapour Pressure 1. Record the temperature and then the vapour pressure for each substance. Temperature = °C 2. Indicate the type(s) of intermolecular force acting between the molecules for each substance. methanol CH3OH ethanol CH3CH2OH propan-1-ol CH3CH2CH2OH Vapour pressure: Vapour pressure: Vapour pressure: O Dispersion Dispersion O Dispersion Dipole/dipole Dipole/dipole Dipole/dipole Hydrogen bonding Hydrogen bonding Hydrogen bonding Substance with highest normal boiling point: Briefly discuss the trend in vapour pressure for these substances in terms of intermolecular forces: CI OH 2-chloropropanc H,C-C- CH3 | propan-2-ol H,c-с-сн, H;C-C- CH3 propanone H. H Vapour pressure: Vapour pressure: Vapour pressure: Dispersion Dipole/dipole Dispersion Dispersion Dipole/dipole Dipole/dipole Hydrogen bonding Hydrogen bonding Hydrogen bonding Substance with highest normal boiling point: Briefly discuss the trend in vapour pressure for these substances in terms of intermolecular forces: pentane CH3CH2CH2CH2CH3 hexane CH3CH2CH2CH2CH2CH3 heptane CH3CH2CH2CH2CH2CH2CH3 Vapour pressure: Vapour pressure: Vapour pressure: Dispersion Dispersion Dispersion O Dipole/dipole Hydrogen bonding Dipole/dipole Dipole/dipole Hydrogen bonding Hydrogen bonding Substance with highest normal boiling point: Briefly discuss the trend in vapour pressure for these substances in terms of intermolecular forces:

kJ and its normal boiling point is 41. °C. Calculate the vapor pressure of X at -22. °C. The enthalpy of vaporization of Substance X is 20.0 mol Round your answer to 2 significant digits. atm Submit Assignr O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessi solubility chem h...pdf 24 CH.9 PP ASSES MacBook Air D00 F7 F8 F9 F10

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24 Feb 2021 2odium chloride (NaCI) is completely saluble in water. What is responsible for its solubility in water? A. Na+ and Clions are favorable sites for H-bonding to torm. В. The presence of charged ends in NaCl enables dipole-dipole interaction with water. e lons in Načl participate in on-induced dipole attractions with water. C. D. London dispersion forces in NaCl predominate leading to strong dipole interactions with water. 5. Kenon (Xe) has a greater atomic weight than Neon (Ne). Xe has 131.3 amu while Ne has 20.2 amu, The melting points are 166.1K and 27.3K, respectively. How do intermolecular forces account for the difference? A. Dipole- dipole interaction is greater in Xe than Ne so more energy is needed to break the bonds. B. H-bonding is greater for substances with higher atomic weight so greater energy is needed to change Xe to vapor. C. Atomic weight increases the chance of lesser dispersion forces so greater energy is needed to separate Xe atoms to change to vapor. D.…

Glaciers are not stationary bodies of ice, but instead slowly move over time (mean speed of 1 meter/day). One reason for this is because these very large glaciers melt from the bottom, and the liquid water beneath the glacier acts as a lubricant for the glacier to move.    Using the phase diagram for water (below) and concepts discussed in class, what is one potential reason that glaciers melt from the bottom at temperatures below 0°C?

Intermolecular Forces and Physical Properties of Pure Substances Which has the greatest vapour pressure at 25°C? SO2 H2O CO2 O3   Which has the greatest viscosity? CH3CH2OH CH3(CH2)4CH3 HOCH2CH2OH HOCH2CHOHCH2OH   Which has the least heat of vaporization? H2Te Xe H2Se H2S   Which has the highest enthalpy of fusion? Li2O HCl H2O MgO   Which has the smallest heat of vaporization? PH3 CH4 H2O H2S

At high altitudes, the ambient air pressure can be significantly less than 1 bar, so water boils at a lower temperature than 100 C. What is the boiling point of water at an altitude where the ambient air pressure is 0.72 bar? The enthalpy of vaporization of water near its boiling point is 40.7 kJ/mol.

At a given temperature, which of the following has the highest vapour pressure?   Select one: CH2O CH3COOH CH3CN CH3Cl C2H6

29.Which of the liquids in the following pair has the lower vapour pressure? Propanol (CH3CH2CH2OH) / Methanol (CH3OH)

The figure shows the phase diagram corresponding to the element sulfur. Sulfur exists as liquid, gas, and two solids, rhombic and monoclinic. 1- Describe the phase changes that occur when S is decompressed (lower P) from 10 atm to 106atm at constant temperature of 100 °C. 2- Indicate the temperature and the pressure for the triple point B, and which phases coexist В 10.0 Solid(rhombic) Liquid 1.0 Solid (monoclinic) 5х 104 Gas A 1 x 104 95.4 114 119 445 Temperature (in degree C) Pressure (in atm)