Consider the following data for the given reaction $2 HI_{(g)} \rightarrow H_{2_{(g)}} + I_{2_{(g)}}$. The order of the reaction is:
Experiment $1$ $2$ $3$
$[HI] \ (mol \ L^{-1})$ $0.005$ $0.01$ $0.02$
Rate $(mol \ L^{-1} \ s^{-1})$ $7.5 \times 10^{-4}$ $3.0 \times 10^{-3}$ $1.2 \times 10^{-2}$

  • A
    $1$
  • B
    $2$
  • C
    $3$
  • D
    $4$

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$A_2 + B_2 \to 2AB$; $R.O.R = k[A_2]^a[B_2]^b$
Initial $[A_2]$ Initial $[B_2]$ $R.O.R. (r) \ M s^{-1}$
$0.2$ $0.2$ $0.04$
$0.1$ $0.4$ $0.04$
$0.2$ $0.4$ $0.08$

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