Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

The reaction N2 (g)+ O2 (g) (equillibrium arrows)2 NO(g) contributes to air pollution when a fuel is burnt in air at a high temperature.At 1500k quillibruium constant K for it is 1.0x10-5 (no units given).Suppose [N2] =0.8 mol L-1 and [O2]=0.20 mol L-1 before any reaction occurs. Calculate the equillibrium concentraion of the reactants and the product after the mixture has been heated to 1500 k.
Asked by Meghana Anil | 06 Mar, 2013, 12:19: AM
answered-by-expert Expert Answer

Let x amount has been decayed from reactant to product then:

  N2  +  O2   2NO

 T =0  0.8     0.20

 T=tequi.  0.8-x   0.2-x  2x

   Kc = 1.0 x 10-5

  Kc =  

  1.0 x 10-5 = (2x)2/ [(0.8 - x)(0.2 - x)] 

 

 If  x is very small, then

  0.8 – x ≈ 0.8

  0.2 – x ≈ 0.2

   1.0 x 10-5  = (2x)2/ [(0.8 )(0.2)]  

   16 x 10-6 = 4x2

  x= 4 x 10-6

  x = 2 x 10-3

Therefore the amount of reactant and product at equilibrium is as follows:

  N2 = 0.8 – 0.002 = 0.798

   O2 = 0.2 – 0.002 = 0.198

  NO = 2x 2 x 10-3 = 4 x 10-3

 
Answered by | 10 Mar, 2013, 10:37: PM
CBSE 12-science - Chemistry
Asked by bhadauriyax | 30 Nov, 2023, 06:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by rahulbiswal946 | 08 Nov, 2023, 07:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by mishraridhi2020 | 23 Jun, 2022, 09:16: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by cjam41665 | 10 Oct, 2021, 12:56: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by arshbhatia0809 | 22 Jul, 2021, 09:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by amitkumar.cis | 14 Jan, 2021, 12:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by Surendersingh0493 | 18 Oct, 2020, 02:05: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by khandarev3580 | 10 Oct, 2020, 10:54: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by rchaitra1204 | 07 Sep, 2020, 09:43: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by dr.akanksha0411 | 07 Aug, 2020, 11:56: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×