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erma4kov [3.2K]
3 years ago
6

In general, which attractions are stronger: intermolecular or intramolecular? Research and explain a quantitative comparison bet

ween the strength of a chemical bond and the strength of intermolecular forces of attraction.
- I understand that intramolecular forces are stronger but I don’t know what to put for the quantitative data
Chemistry
1 answer:
murzikaleks [220]3 years ago
8 0

Answer is: intramolecular attractions are stronger.

Intramolecular attractions are the forces between atoms in molecule.

There are several types of intramolecular forces: covalent bonds, ionic bonds.

Intermolecular forces are the forces between molecules. The stronger are intermolecular forces, the higher is boiling point of compound, because more energy is needed to break interaction between molecules.

There are several types of intermolecular forces: hydrogen bonding, ion-induced dipole forces, ion-dipole forces andvan der Waals forces.

Hydrogen bonds are approximately 5% of the bond strength of covalent C-C or C-H bonds.

Hydrogen bonds strength in water is approximately 20 kJ/mol, strenght of carbon-carbon bond is approximately 350 kJ/mol and strengh of carbon-hydrogen bond is approximately 340 kJ/mol.

20 kJ/350 kJ = 0.057 = 5.7 %.


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Following are important constant that used in present calculations
Heat of fusion of H2O = 334 J/g 
<span>Heat of vaporization of H2O = 2257 J/g </span>
<span>Heat capacity of H2O = 4.18 J/gK 
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Now, energy required for melting of ICE = <span>  334 X 5.25 = 1753.5 J .......(1)
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In the first 85.0 s of this reaction, the concentration of no dropped from 1.12 m to 0.520 m .

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The speed at which a chemical reaction takes place is the rate of the reaction. It is the concentration change per unit time of a reactant in a reaction.

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