Help 11-16 thank you The predominant intermolecular force In (CH3)NH is London d

Question

Help 11-16 thank you The predominant intermolecular force In (CH3)NH is London dispersion forces hydrogen bonding Q jon-dipole forces dipole-dipoJe forces ionic bonding C12 H26 molecules are held together by dipole-dipole interactions dispersion forces Q ion-ion interactions ion-dipole interactions hydrogen bonding Heat of sublimation can be approximated by adding together. heat of freezing (solidification), heat of vaporization heat of deposition, heat of vaporization Q heat of fusion, heat of condensation heat of fusion, heat of vaporization heat of freezing (solidification), heat of condensation Based on the following Information, which compound has the strongest intcrmolecular forocs? Of the following,_is an exothermic process. subliming melting Q boiling freezing All of the above are exothermic volatile liquid is one that Is highly hydrogen-bonded is highly flammable Q readily evaporates is highly viscous is highly cohesive

Explanation / Answer

11) .

Intermolecular force is the one which is present in two molecules.

This molecule has N-H bonding. We know H –bonding is formed in the molecules when H is bonded to the most electronegative atoms like N , F and O.

So the answer : B) Hydrogen bonding.

12).

C12H26 is the structure of alkanes. This is non polar molecule.

So no presence of dipole –diploe interactions, no ion-ion interactions , no hydrogen bond and so it has dispersion force.

The dispersion force is prominent since molecule is non polar.

Ans : B) Dispersion force.

13 )

Sublimation : The process in which the solid evaporates to vapor directly without converting into liquids is known as sublimation.

Therefor it involves heat of fusion and heat of vaporization

Ans :

D) Heat of fusion , heat of vaporization.

14 )

The molecules which need more energy to break apart are having more intermolecular force.

C2H5OH has largest value of Delta Hvap so it has highest intermolecular force.

Ans : Ethanol

15 )

The process in which heat is evolved from the system is called as exothermic process.

While freezing heat is given out so :

Ans : Freezing.

16)

Volatile liquid is readily evaporates.

Ans : C) Readily evaporates.

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