Chemistry chapter 5&6
What is the partial pressure of O2 in a mixture if the total pressure is 4.128 atm and the other components of the mixture have a combined partial pressure of 1.983 atm?
2.145 atm Partial pressure = total pressure - combined partial pressure
If the given pressure is reported as 440 torr, what is the pressure in mm Hg?
440 mm Hg
If the given pressure is reported as 440 mm Hg, what is the pressure in torr?
440 torr
What is the total pressure* of a mixture of the pressure of O2 is 4.128 atm and the other components of the mixture have a combined partial pressure of 1.983 atm ?
6.111 atm Total pressure = pressure + combined partial pressure
At what temperature will a 1.600 L sample of gas initially at STP reach a volume of 4.500 L?
767.8 K
At what temperature will a 1.600 L sample of gas initially at STP reach a volume of 4.500L?
767.8 K
Ionic Soilds
A crystalline soild that is hard and brittle, with a high melting and boiling point, does not conduct in the solid form but does in aqueous solution
Covalent soild
A crystalline soild thatbis hard and brittle, with a high melting and boiling point, does not conduct in the soild form or in aqueous solution
amorphous soild
A soild with no regular and repeating structure
Hypertonic
A solution that is higher in concentration than that inside of a cell
Hypotonic
A solution that is lower in concentration than that inside of a cell
Which of the following below is not one of the four types of crystalline soilds?
Amorphous
Why is molality used in boiling point elevation problems?
Because the concentration (in m) won't change as temperature changes
Which of the gases below will diffuse the slowest?
Br2
Assuming an equal initial concentration, which of the following substances would be the most efficient to add to icy steps?
Calcium nitride
Are the temperature and volume directly and indirectly related?
Direct
Crystalline soild
Has a regular, repeating structure
What is the strongest intermolecular forces found in methanol?
Hydrogen bonding
What principle of the kinetic molecular theory explains the diffusion of gases?
In constant, random motion
As temperature increases the vapor pressure of a liquid _____ ?
Increases
Are presssure and volume directly or indirectly related?
Indirect
With the addition of solute to a solvent, what happens to the freezing point?
It decreases
With the addition of solute to a solvent, what happens to the boiling point?
It increases
Which of the following conditions is true about a solution?
It is homogenous
What is the strongest intermolecular force found in hexane (an organic molecule)?
London dispersion
What principle of the kinetic molecular theory explains why the density of gases is so low?
Mostly empty space
Osmosis
Movement of solvent from a dilute solution to a more concentrated one
Which of the gases below will diffuse the fastest?
O2
What is the major difference between an ideal and real gas?
Real gases have intermolecular forces
Henry's law
Solubility of a gas is proportional to the partial pressure of the gas at a given temperature
colligative properties
Solution properties that depend on the concentration, not the identity, of a solute
H-bonding
Strongest of all intermolecular forces
What are the three conditions that effect solubility?
Temperature, polarity, pressure
surface tension
The measure of attractive forces at the surface of a liquid
boiling point
The point at which the vapor pressure of a solvent is equal to 1 atm
barometer
an instrument used to measure atmospheric pressure
What is viscosity?
resistance to flow
dispersion forces
weakest of all intermolecular forces