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CBSE Class 11-science Answered

an air sample containing molar ratio of 21:79 of o2 and n2 is heated to 2400 degree celcius . if the mole percent of no at euilibrium is 1.8percent .calculate kp for the reaction n2 + o2 equilibrium 2no
Asked by PratibhaPandey | 16 Dec, 2013, 12:22: PM
answered-by-expert Expert Answer

Consider the equilibrium,  

                                

Initial conc.                     79    21                              0

At equilibrium              79-x     21-x                          2x

Given:

 2x = 1.8 , x= 0.9

      

Now,

 

In this case Δ n = 2 – 2 = 0

So, Kp = Kc (RT) ° = Kc

 

Kp = 2.1 × 10-3

Answered by Vaibhav Chavan | 16 Dec, 2013, 01:21: PM
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