Gaseous State

Question 1

Boyle’s law

Answer 1

PV = constant

P vs V - declining curve
P vs 1/V - increasing straight line 
PV vs p or v - straight line parallel to Xaxis 
1/P vs 1/V - declining curve 
Log P vs LogV - declining straight line

Question 2

Charles law

Answer 2

V/T = constant 
L/T = constant 

V vs T- increasing straight line
V vs t - increasing straight line not from origin
V/T vs V or T - straight line parallel to X axis
V/T bs 1/V or 1/T- straight line parallel to X axis
1/T vs V- declining curve

Question 3

Gay Lussac’s Law

Answer 3

P/T = constant
P vs T - increasing straight line not from origin

P/T vs P or T - straight line parallel to X axis

Question 4

Gas equation

Answer 4

PV = nRT

Question 5

Potential energy for gas

Answer 5

P = 1/3 X density X Vrms^2

Question 6

Kinetic energy for gas

Answer 6

K = 3/2 X kT

= 3/2 X P

Question 7

Vrms =

Answer 7

(3RT/M)^1/2

Question 8

Vavg=

Answer 8

(8kt/M||)^1/2

Question 9

Vmps =

Answer 9

(2kT/M)^1/2

Question 10

For monoatomic gases f =

Answer 10

3

Question 11

For diatomic gases f =

Answer 11

5

Question 12

For polyatomic gases f =

Answer 12

6

Question 13

Internal energy Of gases

Answer 13

U = n/2 X RTf

Question 14

Mean free path of gas molecules

Answer 14

Is average distance travelled by a molecule between two successive collisions

Mean free path = 1/(2)^1/2 ||nd^2

Question 15

Molar specific heat C =

Answer 15

Mc

Question 16

Relation of Cv and Cp

Answer 16

Cp>Cv

Question 17

Mayer’s relation

Answer 17

Cp + Cv = 2

Question 18

Coefficient of specific heat =

Answer 18

y = 1 + 2/f = Cp/Cv

Question 19

Cv=?

Answer 19

(f/2)R

Question 20

Cp=?

Answer 20

(1 + f/2)R