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Deuterium is the isotope of hydrogen of ...

Deuterium is the isotope of hydrogen of mass number `2`, with a proton and a neutron in its nucleus. The chemistry of deuterium is nearly identical to the chemistry of hydrogen, except that `C-D` bond is slightly `(5.0 "KJ" //"mole")` stonger than the `C-H` bond. Reaction rates tend to be slower if a `C-D` bond as opposed to a `C-H` bond is broken in a rate limiting step. This effect on the rate is called a kinetic isotope effect.
`CH_(3)-overset(O) overset(||)(C)-CH_(3)overset(D_(2)O,D^(+))toX`

A

`(K_(H))/(K_(D))=1`

B

`(K_(H))/(K_(D))~~4`

C

`(K_(D))/(K_(H))~~4`

D

`(K_(D))/(K_(H))~~2`

Text Solution

Verified by Experts

The correct Answer is:
B
As deprotonation step in case of iodination is rate determinining.
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