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koolman

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Posts posted by koolman

  1. AMONG THE compounds which of the following reacts faster in an SN1 reaction?

    I. cis-4-tert-butylcyclohexyl bromide

    II. trans-4-tert-butylcyclohexyl bromide


    I think II compound beacuse of stable carbocation.

  2. In an experiment, Hughes studied the rate of racemisation of 2-iodooctane by sodium iodide (with

    radioactive iodine) in acetone and compared it with the rate of incorporation of radioactive iodine into 2-iodooctane.

    How will the rate of racemisation compare with the rate of incorporation if

    (I) Each act of exchange proceeds with retention

    of configuration

    (II) Each act of exchange proceeds with

    inversion of configuration

    II) Each act of exchange proceeds randomly in

    which retention and inversion are equally likely

  3. the reagent that will yield the greater amount of substitution on reaction with 1-bromobutane would be

    CH3CH2OK in dimethyl sulfoxide (DMSO)

    OR

    (CH3)3COK in dimethyl sulfoxide (DMSO).

    how can we decide it .


  4. If we have a closed box filled with liquid . It is given a horizontal acceleration g/2 and a vertical acceleration g/2 .

     

    Then I tried to find the angle of the free surface with the horizontal . It should be tan^(-1) 1/2 as slope is equal to tan^(-1)a(x)/g . But here there is vertical acceleration does it affect the slope .

     

    Any help is appreciated

  5. If 1 thousand small drops of WA ter each of radius combined to form one single large drop then what should be the energy . If the surface tension is equal to 0.07 N/m . I think the surface area should decrease as energy is released , but how will we find the energy. Or how can we find radius of large drop to find , A= surface area

  6. If we have a cylindrical tank of area A which has a small outlet of area a at the bottom of the surface . And the container starts filling with a constant rate k m^3/sec . Now the max. level of water will be h = k^2/(2a^2g) as by using bernoulli's equation . But how will find the time after which level of water become h .

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