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Grade 11Inorganic Chemistry

For the reaction, 2A + B ------->products, when the
concentrations of A and B both were doubled,
the rate of the reaction increased from 0.3 mol
L-1s-1 to 2.4 mol L-1 s-1. When the concentration
of A alone is doubled, the rate increased from
0.3 mol L-1s-1 to 0.6 mol L-1s-1
Which one of the following statements is
correct ?
(1) Order of the reaction with respect to B is 2
(2) Order of the reaction with respect to A is 2
(3) Total order of the reaction is 4
(4) Order of the reaction with respect to B is 1
please explain???????????????

Profile image of preet kaur
7 Years agoGrade 11
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1 Answer

Profile image of Mayank
ApprovedApproved Tutor Answer7 Years ago
r = K[A]x [B]y 
this implies that 2x+y=23=8
so we have
x + y = 3       ----------> (1)
also according to question we have
2=2 so eventually we have,on solving
x = 1, y = 2
Order w.r.t. A = 1
Order w.r.t. B = 2
ans is option (1)