Gas Laws

• made of NONMETALS

• simply formulas

• low molar mass

characteristics of gases

unlike solids and liquids __ expand to fill any container

gases

T or F: gases are highly compressible

true

what makes a gaseous homogenous mixture?

2 more more gases that are completely blended

gases that are most well-behaved

ideal gases

usually the total volume of gases is ___ the total volume of container

way less than

1. what is STP?

2. what are the values associated with STP?

1. standard temperature and pressure

2. temperature is 273.15K = 0 C | pressure is 1.00 bar

at STP 1 mol of ideal gas has volume of __ , this is also known as standard molar volume

22.7 L

what is the relation between atmosphere and psi?

1 atm = 14.70 psi

IDENTIFY THE LAWS:

• when temperature is constant, pressure and volume are inversely proportional

• temperature must be in kelvin

boyle’s law

what is constant in boyle’s law?

temperature

what equation is used for boyle’s law?

P1V1=P2V2

IDENTIFY THE LAWS:

• when pressure is constant, volume and temperature are directly proportional

• temperature must be in Kelvin

charle’s law

what is the constant in charles’ law?

pressure

what equation is associated with charles’ law?

(V1) / (T) = V2 / T2

IDENTIFY THE LAWS:

• pressure and temperature are constant, so volume and moles of gas (n) are directly proportional

avogadro’s law

what is the constant in avogadro’s law?

pressure and temperature

what equation is associated with Avogadro’s law?

N1 / V1 = N2 / V2

IDENTIFY THE LAWS:

• all gas laws are combined to make this law

• temperature must be in kelvin

• pressure must be in atm (1atm = 14.70 psi)

ideal gas law

what equation is associated with the ideal gas laws?

PV = nRT

what is R in the ideal gas law equation?

constant = 0.082 L(atm) / mol(K)