A(g) B(g) + C(g) is a first order reaction The reaction was started with reactant A only. Which of the following expression is correct for rate constant k ? (A) t t P ) p p ( ln t k (B) ) p p ( p ln t

Question

A(g) B(g) + C(g) is a first order reaction The reaction was started with reactant A only. Which of the following expression is correct for rate constant k ?

(A) t t P ) p p ( ln t k
(B) ) p p ( p ln t k t
(C) t p p ln t k
(D) ) p p ( p ln t k t

Prashant Kotian · Accepted Answer

Correct answer: B. A(g)  B(g) + C(g) t = 0 Pº 0 t = t Pº – X X X t =  Pº Pº Pt = Pº + x  x = Pt – Pº = Pt – 2 P k =   º P º P ln t k = ) P P ( P ln t t   

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