PHYSICS
WALLAH
THREE STATES OF MATTER GAS LAWS IDEAL GAS EQUATION DEVIATION FROM IDEAL B
(1) BOYLE’S LAW (n, T-CONSTANT) (4) GAY LUSSAC’S LAW (n, V-CONSTANT) PV = nRT
1 Z
P T R = 0.0821 L atm K-1 mol -1
V
P P1 P2 R = 8.314 J K-1 mol -1
P1V1 = P2V2 = 1 Ideal gas
T1 T2 R = 2 cal K-1 mol -1
(2) CHARLE’S LAW (n, P-CONSTANT) (5) AVOGADRO’S LAW (P-CONSTANT) PM
Thermal energy d= P
V T V n RT
V1 V2 V1 V2 Z = Compressibility F actor
INTERMOLECULAR FORCES = =
d = Density of ideal gas
T1 T2 n1 n2 PV
Weakest - London disperson force P= CRT Z= Z = 1, for ideal gas
Strongest - Ion dipole (3) COMBINED GAS LAW (n-CONSTANT) (6) DALTON’S LAW nRT
Other 2 types are dipole - dipole & P1V1 P2V2
for mixture of Non- reacting gases in container
C = Concentration REAL GAS OBEYS IDEAL BEHAVIOU
dipole - induced dipole interactions = P= PA + PB GASES SHOWS IDEAL BEHAVIOUR AT HIGH POINT OR BOYLE TEMPERATURE
T1 T2
A & B - Non reacting gases TEMPERATURE & LOW PRESSURE
Q If two moles of an ideal gas at 546 K occupy Q A gas will approach ideal behaviour at Q The compressibility factor of an i
Q Dipole-induced dipole interactions are present
in which of the following pairs? volume 44.8 L, then pressure must be (A) low T & low P (B) high T & high P (A) 1 (B) < 1 (C) > 1 (D)
(A) HCl and He atoms (B) SiF4 and He atoms (A) 2 atm (B) 3 atm (C) 4 atm (D) 1 atm
(C) ) low T & high P (D) high T & low P
(C) H2O and alcohol (D) Cl2 and CCl4
STATES OF MATTER
TC, PC & VC
MOLECULAR SPEEDS SURFACE TENSION VAPOUR PRESSURE
WALLAH
THREE STATES OF MATTER GAS LAWS IDEAL GAS EQUATION DEVIATION FROM IDEAL B
(1) BOYLE’S LAW (n, T-CONSTANT) (4) GAY LUSSAC’S LAW (n, V-CONSTANT) PV = nRT
1 Z
P T R = 0.0821 L atm K-1 mol -1
V
P P1 P2 R = 8.314 J K-1 mol -1
P1V1 = P2V2 = 1 Ideal gas
T1 T2 R = 2 cal K-1 mol -1
(2) CHARLE’S LAW (n, P-CONSTANT) (5) AVOGADRO’S LAW (P-CONSTANT) PM
Thermal energy d= P
V T V n RT
V1 V2 V1 V2 Z = Compressibility F actor
INTERMOLECULAR FORCES = =
d = Density of ideal gas
T1 T2 n1 n2 PV
Weakest - London disperson force P= CRT Z= Z = 1, for ideal gas
Strongest - Ion dipole (3) COMBINED GAS LAW (n-CONSTANT) (6) DALTON’S LAW nRT
Other 2 types are dipole - dipole & P1V1 P2V2
for mixture of Non- reacting gases in container
C = Concentration REAL GAS OBEYS IDEAL BEHAVIOU
dipole - induced dipole interactions = P= PA + PB GASES SHOWS IDEAL BEHAVIOUR AT HIGH POINT OR BOYLE TEMPERATURE
T1 T2
A & B - Non reacting gases TEMPERATURE & LOW PRESSURE
Q If two moles of an ideal gas at 546 K occupy Q A gas will approach ideal behaviour at Q The compressibility factor of an i
Q Dipole-induced dipole interactions are present
in which of the following pairs? volume 44.8 L, then pressure must be (A) low T & low P (B) high T & high P (A) 1 (B) < 1 (C) > 1 (D)
(A) HCl and He atoms (B) SiF4 and He atoms (A) 2 atm (B) 3 atm (C) 4 atm (D) 1 atm
(C) ) low T & high P (D) high T & low P
(C) H2O and alcohol (D) Cl2 and CCl4
STATES OF MATTER
TC, PC & VC
MOLECULAR SPEEDS SURFACE TENSION VAPOUR PRESSURE
