Gas Laws Quiz Flashcards
(20 cards)
Boyle’s Law
Voume of a gas changes inversely with its pressure when temperature is hekd constant
Steps to Formulas
- List the variables identifying the unknown
- Algebraically rearrange the formula to solve for the unknown
- Fill in the known variables and their units
- Record answer with correct units and sig figs
Gay-Lussac’s Law
Pressure of a gas changes directly with its temperature when volume is held constant
Kelvin
Celsius + 273
All Problems Calculated In
Kelvin
Combined Gas Law
An expression of the relationship between pressure, temperature, and volume of a fixed amount of gas
Pressure Measured In
Atmosphere atm
Kilopascal kPa
Milliliters of mercury mmHg
Torr
Pounds/in^2 psi
Variables
Pressure
Volume
Temperature
Amount/moles
Celsius and Kelvin Increments
Equal
STP
One atm and zero degrees celsius
Charles’ Law
Volume of a gas changes directly with its Kelvin temperature when pressure is held constant
Unknown in Denominator
Cross multiply and divide
Avogadro’s Law
At constant temp and pressure, the volume of gas is directly related to the number of moles
Directly Proportional Laws
Fractions
Ideal Gas Law
Mathmatical relationship between pressure, volume, temperature, and number of moles in a gas
R
Ideal gas constant
0.0821 Latm/molK
Pressure
Caused by molecules hitting the sides of a container or other object
Based on how often or how hard they hit
Two Factors That Directly Influence The Pressure of a Gas
Volume
Temperature
Increase in Volume
Amount increases
Temperature increases
External forces decrease
Colder Gas
Volume decreased with a particle number increase
