Chemical Kinetics and Nuclear ChemistryHard

Question

When excess toluene-α-d (C6H5CH2D) was photo chemically mono chlorinated at 80°C with 0.1 mole of chlorine, there was obtained 0.0212 mole DCl and 0.0848 mole HCl. What is the value of the isotope effect KH/KD?

Options

A.1/4
B.4/1
C.5/1
D.1/5

Solution

$\frac{K^{H}}{K^{D}} = \frac{0.0848}{0.0212} = \frac{4}{1}$

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