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The addtion of Br(3) to trans-2-butene p...

The addtion of `Br_(3)` to trans-2-butene produces

A

(+)2,3-dibromobutane

B

(-)2,3=dibromobutane

C

rac-2,3-dibromobutane

D

meso-2,3-dibromobutane

Text Solution

Verified by Experts

The correct Answer is:
D
`Br_(2)` gives anti addtion.
Trans alkene `to`Antiaddition `to` Erythro product.
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Addition of Br_(2) to trans-2-butene would give a product which is:

Addition of Br_(2) to cis-2-butene would give a product which is:

Addition of bromine to trans-2-butene yields meso-2,3-dibromobutane. Bromine addition is an electrophilic addition.

trans-2-Butene +Br_(2) gives:

BANSAL-HYDROCARBONS-Exercise 1
  1. The reaction CH(2)=CHCH(3)=HBr to CH(3)CHBrCH(3) is-

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  2. Anti-Markownikoff's addition of HBr is not observed in-

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  3. The addtion of Br(3) to trans-2-butene produces

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  4. The addition of HCl in the presence of peroxide does not follow anti-M...

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  5. The ozonolysis of an olefin gives only propanone. The olefin is:

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  6. 3-Methyl-2-pentene on reaction with HOCl gives-

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  7. CH(2)=CH(2)overset(Cl(2))toAoverset(AgOH)to? The product is a-

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  8. Aqueous sulphuric acid reacts with 2-methyl-1-butene to give predomina...

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  9. The olefin which on ozonolysis gives CH(3)CH(2)CHO and CH(3)CHO is-

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  10. Olefines can be converted to paraffins by-

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  11. Ethylene reacts with alkaline KMnO(4) to form-

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  12. Alkene overset(B(2)H(6))tooverset(H(2)O(2)//OH^(-))to2^(@) alcohol the...

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  13. Which order is correct for bond length-

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  14. The relative acidity of ehtyne, ethene and ethane follows the order-

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  15. Ethyne adds on HCl to first give a-

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  16. Which one of these will react with sodium metal-

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  17. Acetylene on passing into excess of HOCl solution forms-

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  18. Dichloro acetoe can be prepared by the reaction-

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  19. Given the followign reactions propyne +HCl(g)toA A+KI(g)toB The co...

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  20. Ethene can be separated from ethyne by passing the mixture through

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