Most Important Selected Qs for JEE AdvancedChemistryHaloalkanes and Haloarenes
The reaction of (+) 2-iodobutane and Nal ^* ( I ^* is radioactive isotope of iodine) in acetone was studied by measuring the rate of racemization ( k _ t ) and the rate of incorporation of I ^* ( k _ i ) . (+) CH ₃ CH ( I ) CH ₂ CH ₃+ Nal ^* CH ₃ CH ( I ^* ) CH ₂ CH ₃+ NaI For this reaction, the relationship between k _ r and k _ i is
Options
- Ak_i=2 k_r
- Bk_i=(1 / 2) k_r
- Ck_i=k_r
- Dk_i=(1 / 3) k_r
Correct answer
B. k_i=(1 / 2) k_r
Step-by-step solution
With the incorporation of one I ^* , overal optical activity is lost by two molecules.