MCQ
The electrophile, $E^+$ attacks the benzene ring to generate the intermediate $\sigma -$ complex. Which $\sigma -$ complex is of lowest energy ?
- A

- B

- C

- ✓







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| Exp. | $[A]$ | $[B_2]$ | Rate $(mol\,L^{-1}\,S^{-1})$ |
| $1$ | $0.50$ | $0.50$ | $1.6 \times {10^{ - 4}}$ |
| $2$ | $0.50$ | $1.00$ | $3.2 \times {10^{ - 4}}$ |
| $3$ | $1.00$ | $1.00$ | $3.2 \times {10^{ - 4}}$ |
The rate law
'$X$ ' and ' $Y$ ' respectively are :