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Q. The initial rates of reaction,
$3A + 2B + C \longrightarrow $
Products, at different initial concentrations are given below. The order with respect to the reactants A, B and C are respectively
Intial rate, $Ms^{-1}$ $[A]_{0}M$, $[B]_{0},M$ $[C]_{0},M$
$5.0 \times 10^{-3}$ 0.010 0.005 0.010
$5.0 \times 10^{-3}$ 0.010 0.005 0.015
$1.0 \times 10^{-2}$ 0.010 0.010 0.010
$1.25 \times 10^{-3}$ 0.005 0.005 0.010

KEAMKEAM 2011Chemical Kinetics

Solution:

1st and 2nd set of data - No change in rate with the change in concentration of 'C'. 1st and 3rd set of data - On doubling the concentration of ' B' rate becomes double.1st and 4th set of data- On doubling the concentration of ' A' rate becomes four times.