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Physical Chemistry

Cool goIITian

Joined:	17 Apr 2008
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21 Apr 2008 19:51:56 IST

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422

Chemical equilibrium

None

The ammonia in equilibrium with a 1:3

N₂-H₂ mixture at 20 atm and 427⁰ C

amounts to 16%.Calculate K_p and K_c for

1/2N₂+3/2H₂-----------NH₃

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Comments (4)

LAMPARD

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Joined: 1 May 2007

Posts: 777

21 Apr 2008 20:07:45 IST

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Is Kc 0.202??

Manotapa Bhaumik

Cool goIITian

Joined: 14 Apr 2008

Posts: 55

21 Apr 2008 20:29:12 IST

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Is Kc=.202 and kp=.0035?

ssbrightstar1

Cool goIITian

Joined: 17 Apr 2008

Posts: 58

21 Apr 2008 20:32:30 IST

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kc is 2 and kp is 0.0349.please explain

LAMPARD

Blazing goIITian

Joined: 1 May 2007

Posts: 777

21 Apr 2008 20:38:09 IST

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0.5N₂ + 1.5H₂ -> NH₃
1 3 0
1-x 3(1-x) 2x

Total moles=4-2x
Thus,0.16(4-2x)=2x. Solve for x.It comes out to be 0.552
Now write expression for Kc and substitute x in it to get answer.
Kp=Kc(RT)^-1

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