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Statement-I: Statement-II: 2-butene is...


Statement-I:
Statement-II: 2-butene is more stable than -2butene as it is having more `alpha-H`.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explantion for Statement-1.

B

Statement-1 is True, Statement-2 is True, Statement-2 in NOT a correct explanation for Statement-1.

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False , Statement-2 is True.

Text Solution

Verified by Experts

The correct Answer is:
D

Hoffmann alkene is major prouduct
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a. Cis- 2 -butene rarr trans- 2 -butane, DeltaH_(1) b. Cis- 2 -butane rarr1 -butene, DeltaH_(2) c. Trans- 2 -butene is more stable than C is- 2 -butene d. Ethalpy of combustion of 1 -butene, DeltaH =- 649.8 kcal//mol e. 9DeltaH_(1) +5DeltaH_(2) = 0 f. Enthalpy of combustion of trans -2 -butene, DeltaH =- 647.1 kcal mol^(-1) . Calculate DeltaH_(1) and DeltaH_(2) ?

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Knowledge Check

  • Statement -1 : Statement-2 : Conjugate base of , is more stable

    A
    Statement -I is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-5
    B
    Statement-1 is true, Statement-2 is true, Statement-2 is not a correct explanation for statement-5
    C
    Statement-1 is true, Statement-2 is false
    D
    Statement-1 is false, Statement-2 is true

  • The effect that makes 2, 3-dimethyl-2-butene more stable than 2-butene is

    A
    resonance
    B
    hyperconjugation
    C
    electromeric effect
    D
    inductive effect

  • The effect that makes 2,3-dimethyl-2-butene more stable than 2-butene is :

    A
    hyperconjugation
    B
    reseonce
    C
    steric effect
    D
    inductive effect

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    The effect that makes 2, 3–dimethyl-2-butene more stable than 2-butene is :-

    Statement-I: Carbon-carbon double bond length in 2-butene is more than that of 1-butene. Statement-II: Hyperconjugation increases the bond length of carbon-carbon double bond.

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