2020 Mod 11 Flashcards
(28 cards)
Define pressure
the force per unit of area exerted on an object
What are the five units of pressure
Pa, kPa, atm, torr, mmHg
How many KPA equals 1.000 ATM
101.3 kPA
What does TORR and MMHG equal
760.0
What is Boyle’s law
PV equals constant
If the temperature stays the same the volume and pressure will also stay the same
Which of the laws he studied in this module it would lead to the Kelvin temperature scale
Charles’s law
What is Charles’s law
At constant pressure, the temperature in volume of a gas are literally proportional
V over T equals constant
What is the absolute temperature scale
It is the Kelvin temperature because we can never reach 0.00 Kelvin
What is extrapolation
Following in establish trend in data even though there’s no data available for that region
What general rule must a careful scientist follow when extrapolating Data
They must extrapolate a very little and only when the data is large enough in amount and trend
What temperature should we always use in every equation during this module
The Kelvin temperature scale
What are the properties of an ideal gas
- The molecules or Adams that make up the gas are very small compared to the total volume available to the gas
- The molecules or Adams that make up the gas must be so far apart from one another that there is no attraction or repulsion between them
- The collision that occurred between the gas molecules or Adams must be elastic. In other words, when the molecules or Adams collide, no energy can be lost in the collision. Also, no energy can be lost when the molecules or Adams of the gas collide with the walls of the container
Under what conditions to gas is behave ideally?
Under the standard temperature and pressure STP
What is STP
A temperature of 273 K and the pressure of 1.00 ATM
Under what conditions can we use all the equations in this module
When a gas has a temperature that is close to or larger than 273K and the pressure that is near or lower than 1.00 ATM. Then the gas will behave in an ideal fashion
What is Dalton’s law of partial pressures
Went two or more ideal glasses are mixed together the total pressure of the mixture is equal to the sum of pressures of each individual gas
Does the pressure of an ideal gas depend on the identity of the gas? If not what does it depend on?
The pressure of an ideal gas does not depend on the identity of the gas. It depends on the quantity of the gas
Vapor pressure
The pressure exerted by the vapor that sit on top of any liquid
What is a general rule that is correlated with vapor pressure
The vapor pressure of any liquid increases with increasing temperature
What is boiling point
The temperature at which the vapor pressure of a liquid is equal to normal atmospheric pressure
What is mole fraction
X equals number of moles of compound over total number of moles in the mixture
What is a dimension less quantity
Hey quantity with no units
The ideal gas law equals
PV=nRT
What does R equal
R = 0.0821 L • ATM over moles • K
