RTPF Kinetics

JEE Advanced 2015 Guidance › Physical Chemistry questions › RTPF Kinetics

A hypothetical reaction,

2X + Y₂ ------> 2XY
X + X \Leftrightarrow X₂ (fast)
X₂ + Y₂ \Leftrightarrow 2XY (slow)

then the order of the reaction is
A. 1
B. 2
C. 3
D. undefined

#Chemistry #Physical Chemistry

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5 Answers

amit sahoo ·2010-03-31 02:57:20

ans 2 as order of the slowest elementary reaction gives order of complex reaction.

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Avinav Prakash ·2010-03-31 02:58:51

ANS:C??

OVERALL ODER:2+1...(FROM X AND Y)=3

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govind ·2010-03-31 02:59:54

i am getting ans B..

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Gone.. ·2010-03-31 03:01:11

ans given is C..

i thought it would be B.

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rickde ·2010-03-31 04:07:32

ans is correct

remember..final rate law must be in terms of initial reactants.
so u will require the equilibrium rxn to substitute the conc. of intermediate X₂ in terms of 2X giving order 3

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RTPF Kinetics

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