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Chem2 test 1
Terms in this set (41)
The __________ the intermolecular forces in the liquid, the lower the vapor pressure of the liquid
A ____________ is the gaseous form of a substance that is liquid at room temperature
The ease with which the electron cloud can be distorted is called its ___________________
Calculate the expected vapor pressure at 25 °C for a solution prepared by dissolving 235 g ethanol (M = 46 g/mol) in 500 mL of water. At 25 °C, the density of water is 0.9971 g/cm3 and the vapor pressure is 23.76 torr.
When the molar mass of a molecule increase, dispersion forces _________________
A ____________ occurs in molecules that experiences covalent bonding
So long as the pressure exerted by a liquid is less than that of the atmosphere the liquid will not_________
A dipole-dipole force is a force of attraction experienced between _________ molecules
The pressure that must be applied at critical temperature to cause condensation is the _________ pressure
A special strong type of dipole-dipole interaction between hydrogen and polar bonds of N, O, and F is called ______________
The tendency for a polar molecule to move in the direction of the resultant force is called
A polar solvent will general dissolve a _____________ solute
Dispersion forces can only occur in _____________ molecules.
The stronger the IMF'S, the ____________________ the boiling point for the molecule
With solids, the higher the temperature, generally the solubility ______________
Vapor pressure ______________ with increases in temperature
Concentrated solutions evaporate more slowly than pure water, meaning they have a __________vapor pressure.
Non-polar molecules that experience stronger dispersion forces due to increased molar mass will see this in their boiling point temperatures
Cations are ___________ polarizable than their parent element
These molecules produce a resultant vectored force
Boiling or melting points depend on the strength of ____________________-
Gases become ________ soluble as temperature rises.
Pressure only has an effect on:
What happens to the freezing point of a solution when more solute is added?
This is what is dissolved
When water moves from a concentration of high vapor pressure to that of low vapor pressure, it is called __________
This does the dissolving
Osmosis can only take place through a membrane that is permeable to only the _______________
The electrolyte in automobile lead storage batteries is 2.6 M sulfuric acid solution that has a density of 1.23 g/mL. Calculate the mass percent of the sulfuric acid.
How much salt is needed to produce a 2.6 molal solution of NaCl if the salt is dissolved in 0.8 kg water?
x 3.25 g
A certain soft drink is bottled so that a bottle at 25°C contains CO2 gas at a pressure 4 atm over the liquid. Assuming the partial pressure of CO2 in the atmosphere is 4.0 x 10-4 atm, calculate the equilibrium concentrations of CO2 in the soda after the bottle is opened. The Henry's Law constant for CO2 in aqueous solution is 3.1 x 10-2 mol/Latm at 25°C.
A solution is prepared by dissolving 52 g HCl in 250 g of water. What is the mass percent of the solution?
A fluid's resistance to flow is called
Concentrated solutions will have a __________ vapor pressure than pure water
What happens to the boiling point of a solution if more solute is added?
126 g of CaCO3 is dissolved in 0.25 kg of water. What is the molality of the solution?
For solutions, an increase in temperature will shift the position of an equilibrium to favor a(n) ________________ process
A saline solution is prepared by dissolving 48 g of NaCl in 100 g of water. If the molar freezing constant, kf, for water is 1.853 Ckg/mol, at what temperature will the resulting solution freeze?
x 0 C
6.0 x 10-8 grams of solute is dissolved in 1 g of water. What is the concentration of the solution?
X 0.6 ppm
42 g of KCl is dissolved in 0.68 kg of water. What is the molality of the solution?
A solution was prepared by dissolving 18 g of glucose in 150 g of water. The resulting solution was found to have a boiling point of 100.34 °C. The molal boiling point elevation constant for water is 0.51 °Ckg/mol. Calculate the molal mass of glucose. Glucose is a molecular solid that is present in individual molecules in solution.
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