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Vicinal dihalide is...

Vicinal dihalide is

A

`CH_3CH_2Br`

B

`BrCH_2CH_2Br`

C

`CH_3CHBr_2`

D

`CH_2=CHBr`

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Terms:** - The term "di" in chemistry refers to the presence of two identical or different groups attached to a molecule. - "Halide" refers to a halogen atom (fluorine, chlorine, bromine, iodine) that is bonded to a carbon atom in an organic compound. 2. **Defining Vicinal:** - The term "vicinal" refers to the relative positions of substituents on a carbon chain. Specifically, vicinal dihalides have two halogen atoms attached to adjacent carbon atoms in a chain. 3. **Identifying Vicinal Dihalides:** - A vicinal dihalide can be represented as R-CH(X)-CH(Y)-R', where X and Y are halogen atoms (e.g., Cl, Br, I) and R and R' can be hydrogen or alkyl groups. - For example, if we take 1,2-dichloroethane (Cl-CH2-CHCl2), it is a vicinal dihalide because the two chlorine atoms are attached to adjacent carbon atoms. 4. **Examples of Vicinal Dihalides:** - 1,2-dichloroethane (Cl-CH2-CHCl) - 1,2-dibromoethane (Br-CH2-CHBr) - 1,2-difluoroethane (F-CH2-CHF) 5. **Conclusion:** - In summary, a vicinal dihalide is a compound that contains two halogen atoms attached to adjacent carbon atoms in a carbon chain. ---
**Step-by-Step Solution:** 1. **Understanding the Terms:** - The term "di" in chemistry refers to the presence of two identical or different groups attached to a molecule. - "Halide" refers to a halogen atom (fluorine, chlorine, bromine, iodine) that is bonded to a carbon atom in an organic compound. 2. **Defining Vicinal:** - The term "vicinal" refers to the relative positions of substituents on a carbon chain. Specifically, vicinal dihalides have two halogen atoms attached to adjacent carbon atoms in a chain. ...
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The total number of compounds amongst the following, that can be classified as vicinal dihalides will be

Knowledge Check

  • Vicinal dihalides undergo double dehydrohalogenation to give terminal alkyne. How many moles of NaNH_2 are used in the overall reaction?

    A
    One
    B
    Two
    C
    Three
    D
    Four

  • Dehalogenation of vicinal dihalides with Zn/alc. Mainly produces

    A
    Alcohol
    B
    Alkene
    C
    Alkyne
    D
    Alkane

  • How many isomeric vicinal- dihalides are possible for the compound having molecular formula C_(3)H_(6) Cl_(2) ?

    A
    1
    B
    2
    C
    3
    D
    4

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    Methods OF Preparation OF Alkynes (From Gem Dihalides, Vicinal Dihalides, Kolbe's Electrolysis), Properties OF Alkynes (Electrophilic Addition, Kucherov Reaction, Reduction, Isomerisation, Aromatisation), Examples

    R-X+Mgoverset(Ether,Delta)rarroverset(delta-)R-overset(delta+)Mg-X Grignard reagents may be prepared from 1^(@) , 2^(@)" and "3^(@) halides as well as from vinayl and aryl halide. Vicinal dihalide and those halide which contain acidic tail do not form Grignard reagent. Which of the following halides is most reactive for the preparation of Grignard reagent?

    R-X+Mgoverset(Ether,Delta)rarroverset(delta-)R-overset(delta+)Mg-X Grignard reagents may be prepared from 1^(@) , 2^(@)" and "3^(@) halides as well as from vinayl and aryl halide. Vicinal dihalide and those halide which contain acidic tail do not form Grignard reagent. Which of the following compounds can form Grignard reagent on reaction with Mg//Ether?

    R-X+Mgoverset(Ether,Delta)rarroverset(delta-)R-overset(delta+)Mg-X Grignard reagents may be prepared from 1^(@) , 2^(@)" and "3^(@) halides as well as from vinayl and aryl halide. Vicinal dihalide and those halide which contain acidic tail do not form Grignard reagent. Product Identify structure of product :

    Statement-I: Acetylene is formed when ethylene chloride or ethylidene chloride is heated with alcoholic KOH. Statement-II: Both gem dihalides and vinicinal dihalides on dehydrohalogenation form alkyne.

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