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mash [69]
3 years ago
9

The ratio of elimination to substitution is exactly the same (26% elimination) for 2−bromo−2−methylbutane and 2−iodo−2−methylbut

ane in 80% ethanol/20% water at 25°C. By what mechanism does elimination most likely occur in these compounds under these conditions?
Chemistry
1 answer:
Contact [7]3 years ago
3 0

Answer:

The reaction proceeds through the SN-1 mechanism.

Explanation:

Based on the question given, the ratio of elimination to substitution is the same (26% elimination) for 2−bromo−2−methylbutane and 2−iodo−2−methylbutane in 80% ethanol/20% water at 25°C.

The formation of the same ratio of products from different starting materials is only possible when both reactions are proceeding with thesame intermediates.

In SN-1 and E-1 mechanism, reaction proceeds via a carbocation mechanism, whereas in the case of SN-2 mechanism, the nucleophile attacks the back side of the leaving group.

In the case of E-2 mechanism, both the beta and halide leaves at the same time to form an alkene.

Hence, the substitution reaction given in the question proceeds through the carbocation intermediate. This implies that the reaction proceeds through the SN-1 mechanism.

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<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Answer:</h2><h2>_____________________________________</h2>

ATOMIC NUMBER: It is the number of protons present in the nucleus of every atom

MASS NUMBER: It is the number of nucleon. Nucleon are the number of proton and neutrons present in the nucleus.

PROTON NUMBER: Proton number equal to the atomic number.

ELECTRON NUMBER: Electron Number is equal to the atomic number.

NEUTRON NUMBER: It is Mass Number - Atomic Number.

CHARGE: It is due to the addition or removal of the electron. + charge when electron removed and - charge when electron is added.

SYMBOL: It is represented as,

                                                X^Z_A

Z is Mass Number

A is Atomic Number

<h2>_____________________________________</h2><h2>Worksheet:</h2>

(I) ATOMIC NUMBER: 17

    MASS NUMBER: 35.5

    PROTON NUMBER: 17

    ELECTRON NUMBER: 17

    NEUTRON NUMBER: 18.5

    CHARGE: 0

<h2>_____________________________________</h2>

(II) ATOMIC NUMBER: 71

    MASS NUMBER: 180

    PROTON NUMBER: 71

    ELECTRON NUMBER: 71

    NEUTRON NUMBER: 109

    CHARGE: 0

<h2>_____________________________________</h2>

(III)  ATOMIC NUMBER: 40

    MASS NUMBER: 86

    PROTON NUMBER: 40

    ELECTRON NUMBER: 38

    NEUTRON NUMBER: 46

    CHARGE: +2

<h2>_____________________________________</h2>

(IV)  ATOMIC NUMBER: 92

    MASS NUMBER: 238

    PROTON NUMBER: 92

    ELECTRON NUMBER: 86

    NEUTRON NUMBER: 146

    CHARGE: +6

<h2>_____________________________________</h2>

(V) ATOMIC NUMBER: 82

    MASS NUMBER: 206

    PROTON NUMBER: 82

    ELECTRON NUMBER: 78

    NEUTRON NUMBER: 124

    CHARGE: +4

<h2>_____________________________________</h2>

(VI) ATOMIC NUMBER: 34

    MASS NUMBER: 79

    PROTON NUMBER: 34

    ELECTRON NUMBER: 36

    NEUTRON NUMBER: 45

    CHARGE: -2

<h2>_____________________________________</h2>

(VII) ATOMIC NUMBER: 48

    MASS NUMBER: 113

    PROTON NUMBER: 48

    ELECTRON NUMBER: 49

    NEUTRON NUMBER: 65

    CHARGE: -1

<h2>_____________________________________</h2>

(VIII) ATOMIC NUMBER: 21

    MASS NUMBER: 42

    PROTON NUMBER: 21

    ELECTRON NUMBER: 21

    NEUTRON NUMBER: 21

    CHARGE: 0

<h2>_____________________________________</h2>

(IX) ATOMIC NUMBER:

    MASS NUMBER:

    PROTON NUMBER:

    ELECTRON NUMBER:

    NEUTRON NUMBER:

    CHARGE:

<h2>_____________________________________</h2>

(X) ATOMIC NUMBER: 83

    MASS NUMBER: 209

    PROTON NUMBER: 83

    ELECTRON NUMBER: 80

    NEUTRON NUMBER: 126

    CHARGE: +3

<h2>_____________________________________</h2>

(XI) ATOMIC NUMBER: 47

    MASS NUMBER: 108

    PROTON NUMBER: 47

    ELECTRON NUMBER: 47

    NEUTRON NUMBER: 61

    CHARGE: 0

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(XII) ATOMIC NUMBER: 49

    MASS NUMBER: 116

    PROTON NUMBER: 49

    ELECTRON NUMBER: 46

    NEUTRON NUMBER: 67

    CHARGE: +3

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(XIII) ATOMIC NUMBER: 53

    MASS NUMBER: 128

    PROTON NUMBER: 53

    ELECTRON NUMBER: 54

    NEUTRON NUMBER: 75

    CHARGE: -1

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(XIV) ATOMIC NUMBER: 76

    MASS NUMBER: 188

    PROTON NUMBER: 76

    ELECTRON NUMBER: 72

    NEUTRON NUMBER: 112

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