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Standard XII

Chemistry

Acidic Nature vs Percentage S Characters

In polyatomic...

Question

In polyatomic molecules the term mean or average bond enthalpy is used. It is calculated by dividing the total bond dissociation enthalpy by?

Number of moles of reactants

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Total number of atoms

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Number of bonds broken

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Number of carbon atoms

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Solution

The correct option is C
Number of bonds broken

In polyatomic molecules the term mean or average bond enthalpy is used.

It is calculated by dividing the total bond dissociation enthalpy by number of bonds broken.

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Similar questions

Q. Bond dissociation enthalpies of

H_{2} (s)

and

N_{2} (g)

are

436.0 k J {m o l}^{- 1}

and enthalpy of formation of

{N H}_{3} (g)

- 46 k J {m o l}^{- 1}

. What is enthalpy of atomization of

{N H}_{3} (g)

? What is the average bond enthalpy of

N - H

bond?

Q. The bond dissociation enthalpy of a hydrogen gas molecule is the least for a single bond between two atoms of any element.

Q. Bond dissociation enthalpies of

H_{2} (g)

and

N_{2} (g)

are 436.0 KJ

{m o l}^{- 1}

and 941.8

{m o l}^{- 1}

and enthalpy of formation of

{N H}_{3} (g)

is -46 KJ

{m o l}^{- 1}

. What is enthalpy of atomization of

{N H}_{3} (g) ?

What is average bond enthalpy of

N - H

bond?

Q. Bond dissociation enthalpies of

H_{2_{(} g)}

and

N_{2_{(} g)}

are 436.0

K J

m o l^{- 1}

and 941.8

K J

m o l^{- 1}

, respectively and enthalpy of formation of

N H_{3_{(} g)}

- 46 K J

m o l^{- 1}

What is the enthalpy of atomization of

N H_{3_{(} g)}

and the average bond enthalpy of

N - H

bond respectively (in

K J

m o l^{- 1}

Q. The standard enthalpy of formation of

{N H}_{3}

- 46 k J {m o l}^{- 1}

. If the enthalpy of formation of

H_{2}

from its atoms is

- 436 k J {m o l}^{- 1}

and that of

N_{2}

- 712 k J {m o l}^{- 1}

, the average bond enthalpy of

N - H

bond in

{N H}_{3}

is:

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In polyatomic molecules the term mean or average bond enthalpy is used. It is calculated by dividing the total bond dissociation enthalpy by?

The correct option is C Number of bonds broken In polyatomic molecules the term mean or average bond enthalpy is used. It is calculated by dividing the total bond dissociation enthalpy by number of bonds broken.

The correct option is C
Number of bonds broken

In polyatomic molecules the term mean or average bond enthalpy is used.

It is calculated by dividing the total bond dissociation enthalpy by number of bonds broken.