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  • For internal energy of ideal gas which statement is true (I) internal potential energy of an ideal gas is zero (ii) Total internal energy is equal to internal kinetic energy of

For internal energy of ideal gas which statement is true

(I) internal potential energy of an ideal gas is zero

(ii) Total internal energy is equal to internal kinetic energy of system

(iii) Total internal energy is given by U=\frac{3}{2}\mu RT where \mu is no of moles

Option: 1

(i),(ii) and (iii)


Option: 2

(ii) and (iii)


Option: 3

only (ii)


Option: 4

only (iv)


Answers (1)

best_answer

As we learnt

 

Type of internal energy -

 

Due to molecular motion, the internal energy is kinetic internal energy (UK).

- wherein

Due to molecular configuration, it is called internal potential energy (UP).

The total internal energy of the system is equal to the total kinetic energy and internal potential energy.

U_T=U_K+U_P

For an ideal gas there is no molecular attraction so U_P=0

So,U_T=U_K

Total internal energy is equal to the internal kinetic energy of the gas.

Posted by

manish

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