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Determine the value of the rate constant...

Determine the value of the rate constant for the elementary reaction:
`I_(2)(g)+H_(2) (g) rarr 2 Hl (aq) `
Given that when [`I_(2)`] is `0.15`M and [`H_(2)`] is 0.2M ,the rate of reaction is `0.005M s^(-1)` at 298K .
(a) `1.06 M^(-1)s^(-1)`
(b) `2.16 M^(-1)s^(-1)`
(c) `3.16 M^(-1)s^(-1)`
(d) `0.166M^(-1)s^(-1)`

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