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For the decomposition of hydrogen iodide at 127°C, the fraction of molecules having energy equal to or greater than activation energy can be given as ______. -

Question

For the decomposition of hydrogen iodide at 127°C, the fraction of molecules having energy equal to or greater than activation energy can be given as ______.

Options

`"e"^((-"E"_"a")/(2.303 " R"))`
`"e"^((-"E"_"a")/(920 " R"))`
`10^((-"E"_"a")/(2.303 " R"))`
`10^((-"E"_"a")/(921.2 " R"))`

MCQ

Fill in the Blanks

Solution

For the decomposition of hydrogen iodide at 127°C, the fraction of molecules having energy equal to or greater than activation energy can be given as `underline(10^((-"E"_"a")/(921.2 " R")))`.

Explanation:

Fraction of molecules = `"e"^((- "E"_a)/(10^(2.303 " RT")))`

`= 10^((-"E"_a)/(2.303 xx "R" xx 400))`

`= 10^((- "E"_"a")/(921.2 " R"))`

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Collision Theory of Chemical Reactions

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