R/IR, Adiabatic,

Question 1

Process in thermodynamic

Answer 1

Reversible [ isothermal , adiabatic]
Irreversible [ isothermal , adiabatic ]

Question 2

Reversible isothermal transformation of ideal gas

Answer 2

= –Pext. dV
=– nRT Ln V2/V1,P1/P2
P1V1,P2V2
U,H=0
dq≈=–w

Question 3

Irreversible isothermal transformation of ideal gas

Answer 3

W=- Pext dV
- P2 (V2–V1)
U,H=0
dq= -w

Question 4

In adiatic expansion

Answer 4

Volume increases, pressure decreases, temperature decreases

Question 5

In adiabatic Boyles law not applied

Question 6

Cp/Cv=

Answer 6

Gamma

Question 7

For spontanety of photochemical rxn delta G must be

Answer 7

Delta G need not to be negative

Question 8

Which two process by which excited molecule comes to ground state

Answer 8

Radiative … phosphorescent, fluorescence
Non radiative … internal conversion,interested crossing