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Standard XII

Chemistry

Enthalpy

i Cis-2-buten...

Question

(i) Cis-2-butene $\to$ trans-2-butene, $Δ H_{1}$
(ii) Cis-2-butene $\to$ 1-butene, $Δ H_{2}$
(iii) Trans-2-butene is more stable than cis-2-butene.
(iv) Enthalpy of combustion of 1- butene, $Δ H = - 647.0 k C a l / m o l .$
The value of $Δ H_{1}$ & $Δ H_{2}$ respectively in K Cal/mole are

-1.0,1.8

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1.8, -1.0

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-5, 9

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-2, 3.6

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Solution

The correct option is A -1.0,1.8
The value of $Δ H_{1}$ & $Δ H_{2}$ respectively in K Cal/mole are -1.0 and1.8.

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Similar questions

Q. (i) Cis - 2 - butene

\to

trans-2-butene,

△ H_{1}

(ii) Cis - 2 - butene

\to

1 - butene,

△ H_{2}

(iii) Trans-2-butene is more stable than cis - 2 - butene.
(iv) Enthalpy of combustion of 1 - butene,

△ H = - 649.8 k c a l / m o l

(v)

9 △ H_{1} + 5 △ H_{2} = 0

(vi) Enthalpy of combustion of trans 2 - butene,

△ H = - 647.0 k c a l / m o l .

The value of

△ H_{1}

and

△ H_{2}

in kcal/mol are

Q. (i) Cis - 2 - butene

\to

trans-2-butene,

△ H_{1}

(ii) Cis - 2 - butene

\to

1 - butene,

△ H_{2}

(iii) Trans-2-butene is more stable than cis - 2 - butene.
(iv) Enthalpy of combustion of 1 - butene,

△ H = - 649.8 k c a l / m o l

(v)

9 △ H_{1} + 5 △ H_{2} = 0

(vi) Enthalpy of combustion of trans 2 - butene,

△ H = - 647.0 k c a l / m o l .

The value of

△ H_{1}

and

△ H_{2}

in kcal/mol are

Q. What is the order of stability for
I. 1-butene; II cis-2-butene; III. trans-2-butene?

There are some alkenes are given as follow:

2-methyl propene, cis-2-butene, trans-2-butene

Which of the following is the correct order for increasing order of reactivity for acid catalyzed hydration?

1) trans-2-butene< cis-2-butene < 2-methyl propene

2) cis-2-butene< trans-2-butene < 2-methyl propene

3) 2-methyl propene < trans-2-butene < cis-2-butene

Q. STATEMENT - 1: cis-2-butene is more polar than trans-2-butene.
STATEMENT - 2: cis-2-butene is super imposable on its mirror-image, whereas trans 2-butene is not superimposable on its mirror image.

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(i) Cis-2-butene → trans-2-butene, ΔH1(ii) Cis-2-butene → 1-butene, ΔH2(iii) Trans-2-butene is more stable than cis-2-butene.(iv) Enthalpy of combustion of 1- butene, ΔH=−647.0kCal/mol.The value of ΔH1 & ΔH2 respectively in K Cal/mole are

The correct option is A -1.0,1.8The value of ΔH1 & ΔH2 respectively in K Cal/mole are -1.0 and1.8.

(i) Cis-2-butene $\to$ trans-2-butene, $Δ H_{1}$
(ii) Cis-2-butene $\to$ 1-butene, $Δ H_{2}$
(iii) Trans-2-butene is more stable than cis-2-butene.
(iv) Enthalpy of combustion of 1- butene, $Δ H = - 647.0 k C a l / m o l .$
The value of $Δ H_{1}$ & $Δ H_{2}$ respectively in K Cal/mole are

The correct option is A -1.0,1.8
The value of $Δ H_{1}$ & $Δ H_{2}$ respectively in K Cal/mole are -1.0 and1.8.