A total synthes's of the marine natural product aldingenin C In the laboratory resuited in a significant revision of its proposed structure. The synthesis involved the conversion of compound 1 to compound 2, which is an Intramo lecular SN2-type process. Ths substitution reaction involves a very poor leaving group, but the reaction is nevertheless favorable, because it involves opening of the strained three-membered ring (called an epoxide). The relief of ring strain can be a powerful driving force for reactions. Draw a mechanism for this reaction. Include lone pairs and formal charge in CH2.

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

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.