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Grade 12Physical Chemistry

Q.4:- kCFOR a2(G) + b2(g)2AB (g) at 1000 C is 50. If one line flask containing 1 mole of A2 is connected with a 2L flask containing 2mole of B2 ; How many mole of AB will be formed at??

Profile image of Prakhar  Srivastava
13 Years agoGrade 12
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1 Answer

Profile image of Akash Kumar Dutta
13 Years ago

Dear Prakhar,

let x moles of A2 be changed to AB,
THEN no. of moles of AB at equilibrium=2x
Conc. of A2 at eq.= 1-x/3
Conc. of B2 at eq.= 2-x/3
Conc. of AB at eq.= 2x/3
also K(c)=50
applying LAW OF MASS ACTION WE GET
a quaratic in x and solving that we get
x=.9
HENCE No. OF MOLES OF AB=2x=1.8 moles(approx.)(ANS)

Regards.