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Discussion :: GATE Chemistry

  1. Consider the reaction
    H2 + C2H4 → C2H6 
    The molecular diameters of H2 and C2H4 are 1.8 Ã… and 3.6 Ã… respectively. The pre-exponential factor in the rate constant calculated using collision theory in m3 (mole)-1 s-1 is approximately 
    (For this reaction at 300 K, [(8kbT)/πμ]1/2 NA = 1.11 * 1027 m(mole)-1 s-1, where the symbols have their usual meanings)
    2. A.
    2.5 * 108
    B.
    2.5 * 1014
    C.
    9.4 * 1017
    D.
    9.4 * 1023

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    Answer : Option A

    Explanation :

    -NA-

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