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what is meant by the term average bond e...

what is meant by the term average bond enthalpy? Why is there difference in bond enthalpy of O-H bond in ethanol `(C_(2)H_(5)OH)` and water?

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### Step-by-Step Solution: 1. **Definition of Average Bond Enthalpy**: - Average bond enthalpy refers to the average energy required to break one mole of a specific type of bond in a molecule, averaged over several different compounds that contain that bond. It is particularly useful for polyatomic species, which are molecules that contain more than two atoms. 2. **Calculation of Average Bond Enthalpy**: - The average bond enthalpy is calculated by taking the total bond dissociation enthalpy (the energy required to break all the bonds in a molecule) and dividing it by the number of bonds broken. This gives a mean value that represents the bond strength. ...
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NCERT EXEMPLAR ENGLISH-CHEMICAL BONDING AND MOLECULAR STRUCTURE-Short answer types questions
  1. Using molelcular orbital theory, compare the bond energy and magnetic ...

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  2. Explain the shape of BrF(5^.)

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  3. Structures of molecules of two compounds are given below. a) Whic...

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  4. Why does type of overlap given in the following figure not result in b...

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  5. Explain why PCl(5) is trigonal bipyramidal whereas IF(5) is square pyr...

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  6. In both water and dimethyl ether (CH(3)-underset(..)overset(..)O-CH(3)...

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  7. Write Lewis structure of the following compounds and show format charg...

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  8. The energy of sigma2p(z), molecular orbital is greater than pi2p(x) an...

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  9. Give the change in bond order in the following ionisation process? i...

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  10. Give reason for the following. a) Covalent bonds are directional bon...

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  11. What is an ionic bond? With two suitable exmaples the difference betwe...

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  12. Arrange the following bonds in order of increasing ionic character giv...

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  13. Explain why CO(3)^(2-) ion cannot be represented by a single Lewis str...

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  14. Predict the hybridisation of each carbon in the molecule of organic co...

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  15. Group the following as linear and non-linear molecules : H(2)O,HOCl,...

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  16. Elements X,Y and Z have 4,5 and 7 valence electrons respectively, (i) ...

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  17. Draw the resonatin structure of (i) Ozone molecule (ii) Nitrate ion

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  18. Presict the shapes of the following molecules on the basis of hybridis...

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  19. All the C-O bonds in carbonate in (CO(3)^(2-)) are equal in length. Ex...

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  20. what is meant by the term average bond enthalpy? Why is there differen...

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