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Center of Mass as an Average Point

For a reversi...

Question

For a reversible isothermal expansion of one mole of an ideal gas at $300 K$ , from a volume of $10 {d m}^{3}$ to $20 {d m}^{3}$ , $Δ H$ is:

1.73 K J

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- 1.73 K J

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3.46 K J

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Z e r o

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Solution

The correct option is A $Z e r o$
The correct answer is option(D).

Solution:

$A s g i v e n p r o c e s s e x p a n d e d i s o t h e r m a l l y m e a n s a t a c o n s t a n t t e m p e r a t u r e$

$Δ T = c o n s t a n t$

$T h e i n t e r n a l e n e r g y o f g a s e s d e p e n d s o n t h e t e m p e r a t u r e a s w e i n c r e a s e t h e t e m p e r a t u r e t h e k i n e t i c e n e r g y o f m o l e c u l e s i n c r e a s e s t h a t i n c r e a s e t h e i n t e r n a l e n e r g y o f m o l e c u l e s .$

$T h e r e f o r e, t h e i n t e r n a l e n e r g y o f g a s e s a l s o r e m a i n s c o n s t a n t a t c o n s t a n t t e m p e r a t u r e .$

$S o f o r g i v e n i s o t h e r m a l p r o c e s s .$

$Δ E = 0$

Hence,zero (0) is the answer.

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