Lecture 15-gases Flashcards
1 Pa =
1 N/m^2
1 atm=Pa
101,325 Pa
1kPa
1000Pa
1 atm =kpa
101.325kPa
1atm=torr
760 torr
1atm=mmHg
760mmHg
1mmhg=torr
1 Torr
1atm=psi
14.7 psi
P=( force and surface area)
P=F/S
Equation: S=
S=Force/P
Equation: F=
P x S
Boyles Law definition
Pressure and gas are inversely proportion-As P increases, D decreases!
Boyles Law equation
P1 x V1=P2 x V2 (constant)
Boyles Law equation Find P1
P1=P2 x V2 over V1
Boyles Law equation Find P2
P2=P1 x V1 over V2
Boyles Law equation Find V1
V1=P2 x V2 over P1
Boyles Law equation find V2
V2=P1 x V1 over P2
Charles Law Definition
Volume is proportional to Temperature- As Temp increases, Volume also increases
Charles Law Equation
V1 over V2 = T1 over T2
Charles Law equation Find V2
V2=V2 x T2 over T1
Charles Law equation find T1
T1=V1 x T2 over V2
Charles law find V1
V1 =T1 x V2 over T2
Charles Law equation Find T2
T2=V2 x T1 over V1
Combined Gas Law definition
Ration of product of Pressure and Volume to the absolute temperature of a fixed amount of gas remains constant
Combined Gas Law equation
P1 x V1 over T1= P2 x V2 over T2
Combined gas law find T2
T2 = P2 x V2 x T1 over P1 x V1
Combined gas law find V2
V2=P1 x V1 x T2 over T1 x P2
Avogadro Law Definition
Volume is proportional to gas particles-While P and T remain constant, equal number of molecules
Avogadro’s Law Equation
V1 over N1 = V2 over N2
Ideal Gas Law Definition
Product of the pressure and volume of one gram molecule of an ideal gas is equal to the product of the absolute temperature of the gas and the universal gas constant-V prop to 1 over P, T, and N (Avogadro’s law)
Ideal gas law Equation
PV=nRT (R = gas constant) or PV=m over Mm x RT
R=
Gas constant
R=ATM
R=0.08206
R=not ATM
R=8.314
Find V ideal gas law
V=nxRxT over P
Find n ideal gas law
n=P x V over R x T
Daltons Law of Partial Pressures equation
Ptotal=P1 + P2+ P3 …
P02 =Kappa (X02) x P total
Daltons Law of Partial Pressures definition
Fractional composition (Kappa)= Percent composition / 100 and Partial Pressure = Fractional composition X total pressure