1. Complete the reaction below
I
CH3
HBr
С—С
H
H

This reaction is an example of Hydrohalogenation reaction of alkene.

In this reaction the double bond of alkene acts as nucleophile.

This reaction follows Markovnikov's rule i.e. the bromide will add to more substituted carbon atom.

This is because the carbocation intermediate formed during the reaction is is more stable due to its secondary structure.

The final product is called 2-Bromopropane.

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when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml