19. In alkaline hydrolysis of a tertiary alkyl halide by aqueous alkali if concentration of alkali is doubled what is rate of reaction

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Q. In alkaline hydrolysis of tertiary halide by aqueous alkali if concentration of alkali doubled, then the reaction:

Q. The correct increasing order of the rate of reaction for alkyl halides undergoing

E_{1}

and

E_{2}

reaction respectively is:
Here,

1^{\circ} is primary alkyl halide

2^{\circ} is secondary alkyl halide

3^{\circ} is tertiary alkyl halide

Q. Which of the following alkyl halides undergoes hydrolysis with aqueous

K O H

at the fastest rate?

Pthalamide on treatment with ethanolic potassium hydroxide forms potassium salt of phthalimide which on heating with alkyl halide followed by alkaline hydrolysis produces the corresponding amine. This reaction is known as:

Q. A secondary alkyl halide (A) hydrolyzes with alkali (B) in aqueous medium simultaneously via

S_{N} 1

and

S_{N} 2

pathways with rate constants

k_{1}

and

k_{2}

respectively. From kinetic data, it was found that a plot of

= \frac{- 1}{[A]} \frac{d [A]}{d t} v s [B]

is straight line with a slope equal to

2.7 \times 10^{- 4} L m o l^{- 1} m i n^{- 1}

and intercept equal to

1.02 \times 10^{- 3}

. Minimum initial concentration of [A] = 0.2 M and [B], i.e.,

[⊖ O] = 0.5 M

The value of overall rate constant of the hydrolysis of A (in L

m o l^{- 1} m i n^{- 1}

) is:

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