Chapter 11 Flashcards
The force per unit area on a surface
Pressure
The force that will increase the speed of a one-kilogram mass by one meter per second each second that the force is applied
Newton
A device used to measure atmospheric pressure
Barometer
A common unit of pressure, symbolized by mm Hg
Millimeters of mercury
A unit of pressure equivalent to 760 mm Hg, symbolized by atm
Atmosphere of pressure
The pressure exerted by a force of one newton acting on an area of one square meter
Pascal
The pressure of each gas in a mixture
Partial pressure
States that the total pressure of a gas mixture is the sum of the partial pressures of the component gases (Pt= P1+P2 …)
Dalton’s Law of Partial Pressures
States the the volume of a fixed mass of gas varies inversely with the pressure at constant temperature (PV = k)
Boyle’s Law
The temperature of -273.15 degrees Celsius or 0 degrees Kelvin
Absolute zero
States that the volume of a fixed mass of gas at constant pressure varies directly with the Kelvin temperature (V=kT)
Charles’ Law
States that the pressure of a fixed mass of gas at constant volume varies directly with the Kelvin temperature (P=kT)
Gay-Lussac’s Law
Expresses the relationship between pressure, volume, and temperature of a fixed amount of gas (PV / T = k)
Combined gas law
States that at constant temperature and pressure, the volumes of gaseous reactants and products and be expressed as ratios of small whole numbers
Gay-Lussac’s Law of Combining Volumes of Gases
States that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules (V=kn)
Avogadro’s Law
The volume occupied by one mole of a gas at STP (22.4 L)
Standard molar volume of a gas
The mathematical relationship among pressure, volume, temperature, and the number of moles of a gas (PV = nRT)
Ideal gas law
The constant R in the ideal gas law (PV = nRT)
The ideal gas constant
States that the rates of effusion of gases at the same temperature and pressure are inversely proportional to the square roots of their molar masses
Graham’s law of effusion