273021
Which one of the following order is correct for the bond energies of halogen molecules?
1 $\mathrm{I}_2>\mathrm{Cl}_2>\mathrm{Br}_2$
2 $\mathrm{Br}_2>\mathrm{Cl}_2>\mathrm{I}_2$
3 $\mathrm{I}_2>\mathrm{Br}_2>\mathrm{Cl}_2$
4 $\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{I}_2$
Explanation:
Bond dissociation energy of halogen family decreases down the group as the size of atom increase Bond energy of halogen $\propto \frac{1}{\text { size of halogens }}$ Therefore, the order of bond energy is, $\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{I}_2$
AP EAMCET (Engg.) 2001
Thermodynamics
273023
The decreasing order of bond dissociation energies of $\mathrm{C}-\mathrm{C}, \mathrm{C}-\mathrm{H}$ and $\mathrm{H}-\mathrm{H}$ bonds in
Bond dissociation energies depend on the strength of the bonds. Higher the strength, the greater is the energy. The bond strength depend upon the extent of overlapping which is dependent on the size of each overlapping atom. smaller the size of the atom, more will be the bond strength. $\mathrm{H}-\mathrm{H}>-\mathrm{C}-\mathrm{H}>-\mathrm{C}-\mathrm{C}-$
AP EAMCET (Engg.) -2007
Thermodynamics
273029
The bond dissociation energies of four bonds C-A, C-B, C-D and C-E respectively 240,382 , $276,486 \mathrm{~kJ} \mathrm{~mol}^{-1}$. The atom with smallest size is
1 $\mathrm{A}$
2 $\mathrm{B}$
3 $\mathrm{D}$
4 $\mathrm{E}$
Explanation:
C-E bond has highest bond Energy, it means that the covalent bond $\mathrm{C}-\mathrm{E}$ will be strongest. Smaller is the size of atom, stronger is the covalent bond. We can see that $\mathrm{C}-\mathrm{D}$ bond has the highest bond dissociation energy of $486 \mathrm{~kJ} \mathrm{~mol}^{-1}$. Hence, it is most difficult to break
Assam CEE-2020
Thermodynamics
273033
Internal energy is sum of
1 kinetic energy and potential energy
2 all types of energy of the system
3 energy of internal system
4 None of the above
Explanation:
Internal energy is the energy associated with every substance, depending on the chemical nature, temperature, pressure and volume. It is the sum of many Pressure and volume. It is the sum of many type of energies such as translational energy, rational energy vibrational energy, electronic energy etc. $\mathrm{U}=\mathrm{U}_{\text {trans }}+\mathrm{U}_{\text {rotat }}+\mathrm{U}_{\mathrm{vib}}+\mathrm{U}_{\text {bonding }}+\mathrm{U}_{\text {electronic }}$
NEET Test Series from KOTA - 10 Papers In MS WORD
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Thermodynamics
273021
Which one of the following order is correct for the bond energies of halogen molecules?
1 $\mathrm{I}_2>\mathrm{Cl}_2>\mathrm{Br}_2$
2 $\mathrm{Br}_2>\mathrm{Cl}_2>\mathrm{I}_2$
3 $\mathrm{I}_2>\mathrm{Br}_2>\mathrm{Cl}_2$
4 $\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{I}_2$
Explanation:
Bond dissociation energy of halogen family decreases down the group as the size of atom increase Bond energy of halogen $\propto \frac{1}{\text { size of halogens }}$ Therefore, the order of bond energy is, $\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{I}_2$
AP EAMCET (Engg.) 2001
Thermodynamics
273023
The decreasing order of bond dissociation energies of $\mathrm{C}-\mathrm{C}, \mathrm{C}-\mathrm{H}$ and $\mathrm{H}-\mathrm{H}$ bonds in
Bond dissociation energies depend on the strength of the bonds. Higher the strength, the greater is the energy. The bond strength depend upon the extent of overlapping which is dependent on the size of each overlapping atom. smaller the size of the atom, more will be the bond strength. $\mathrm{H}-\mathrm{H}>-\mathrm{C}-\mathrm{H}>-\mathrm{C}-\mathrm{C}-$
AP EAMCET (Engg.) -2007
Thermodynamics
273029
The bond dissociation energies of four bonds C-A, C-B, C-D and C-E respectively 240,382 , $276,486 \mathrm{~kJ} \mathrm{~mol}^{-1}$. The atom with smallest size is
1 $\mathrm{A}$
2 $\mathrm{B}$
3 $\mathrm{D}$
4 $\mathrm{E}$
Explanation:
C-E bond has highest bond Energy, it means that the covalent bond $\mathrm{C}-\mathrm{E}$ will be strongest. Smaller is the size of atom, stronger is the covalent bond. We can see that $\mathrm{C}-\mathrm{D}$ bond has the highest bond dissociation energy of $486 \mathrm{~kJ} \mathrm{~mol}^{-1}$. Hence, it is most difficult to break
Assam CEE-2020
Thermodynamics
273033
Internal energy is sum of
1 kinetic energy and potential energy
2 all types of energy of the system
3 energy of internal system
4 None of the above
Explanation:
Internal energy is the energy associated with every substance, depending on the chemical nature, temperature, pressure and volume. It is the sum of many Pressure and volume. It is the sum of many type of energies such as translational energy, rational energy vibrational energy, electronic energy etc. $\mathrm{U}=\mathrm{U}_{\text {trans }}+\mathrm{U}_{\text {rotat }}+\mathrm{U}_{\mathrm{vib}}+\mathrm{U}_{\text {bonding }}+\mathrm{U}_{\text {electronic }}$
273021
Which one of the following order is correct for the bond energies of halogen molecules?
1 $\mathrm{I}_2>\mathrm{Cl}_2>\mathrm{Br}_2$
2 $\mathrm{Br}_2>\mathrm{Cl}_2>\mathrm{I}_2$
3 $\mathrm{I}_2>\mathrm{Br}_2>\mathrm{Cl}_2$
4 $\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{I}_2$
Explanation:
Bond dissociation energy of halogen family decreases down the group as the size of atom increase Bond energy of halogen $\propto \frac{1}{\text { size of halogens }}$ Therefore, the order of bond energy is, $\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{I}_2$
AP EAMCET (Engg.) 2001
Thermodynamics
273023
The decreasing order of bond dissociation energies of $\mathrm{C}-\mathrm{C}, \mathrm{C}-\mathrm{H}$ and $\mathrm{H}-\mathrm{H}$ bonds in
Bond dissociation energies depend on the strength of the bonds. Higher the strength, the greater is the energy. The bond strength depend upon the extent of overlapping which is dependent on the size of each overlapping atom. smaller the size of the atom, more will be the bond strength. $\mathrm{H}-\mathrm{H}>-\mathrm{C}-\mathrm{H}>-\mathrm{C}-\mathrm{C}-$
AP EAMCET (Engg.) -2007
Thermodynamics
273029
The bond dissociation energies of four bonds C-A, C-B, C-D and C-E respectively 240,382 , $276,486 \mathrm{~kJ} \mathrm{~mol}^{-1}$. The atom with smallest size is
1 $\mathrm{A}$
2 $\mathrm{B}$
3 $\mathrm{D}$
4 $\mathrm{E}$
Explanation:
C-E bond has highest bond Energy, it means that the covalent bond $\mathrm{C}-\mathrm{E}$ will be strongest. Smaller is the size of atom, stronger is the covalent bond. We can see that $\mathrm{C}-\mathrm{D}$ bond has the highest bond dissociation energy of $486 \mathrm{~kJ} \mathrm{~mol}^{-1}$. Hence, it is most difficult to break
Assam CEE-2020
Thermodynamics
273033
Internal energy is sum of
1 kinetic energy and potential energy
2 all types of energy of the system
3 energy of internal system
4 None of the above
Explanation:
Internal energy is the energy associated with every substance, depending on the chemical nature, temperature, pressure and volume. It is the sum of many Pressure and volume. It is the sum of many type of energies such as translational energy, rational energy vibrational energy, electronic energy etc. $\mathrm{U}=\mathrm{U}_{\text {trans }}+\mathrm{U}_{\text {rotat }}+\mathrm{U}_{\mathrm{vib}}+\mathrm{U}_{\text {bonding }}+\mathrm{U}_{\text {electronic }}$
273021
Which one of the following order is correct for the bond energies of halogen molecules?
1 $\mathrm{I}_2>\mathrm{Cl}_2>\mathrm{Br}_2$
2 $\mathrm{Br}_2>\mathrm{Cl}_2>\mathrm{I}_2$
3 $\mathrm{I}_2>\mathrm{Br}_2>\mathrm{Cl}_2$
4 $\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{I}_2$
Explanation:
Bond dissociation energy of halogen family decreases down the group as the size of atom increase Bond energy of halogen $\propto \frac{1}{\text { size of halogens }}$ Therefore, the order of bond energy is, $\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{I}_2$
AP EAMCET (Engg.) 2001
Thermodynamics
273023
The decreasing order of bond dissociation energies of $\mathrm{C}-\mathrm{C}, \mathrm{C}-\mathrm{H}$ and $\mathrm{H}-\mathrm{H}$ bonds in
Bond dissociation energies depend on the strength of the bonds. Higher the strength, the greater is the energy. The bond strength depend upon the extent of overlapping which is dependent on the size of each overlapping atom. smaller the size of the atom, more will be the bond strength. $\mathrm{H}-\mathrm{H}>-\mathrm{C}-\mathrm{H}>-\mathrm{C}-\mathrm{C}-$
AP EAMCET (Engg.) -2007
Thermodynamics
273029
The bond dissociation energies of four bonds C-A, C-B, C-D and C-E respectively 240,382 , $276,486 \mathrm{~kJ} \mathrm{~mol}^{-1}$. The atom with smallest size is
1 $\mathrm{A}$
2 $\mathrm{B}$
3 $\mathrm{D}$
4 $\mathrm{E}$
Explanation:
C-E bond has highest bond Energy, it means that the covalent bond $\mathrm{C}-\mathrm{E}$ will be strongest. Smaller is the size of atom, stronger is the covalent bond. We can see that $\mathrm{C}-\mathrm{D}$ bond has the highest bond dissociation energy of $486 \mathrm{~kJ} \mathrm{~mol}^{-1}$. Hence, it is most difficult to break
Assam CEE-2020
Thermodynamics
273033
Internal energy is sum of
1 kinetic energy and potential energy
2 all types of energy of the system
3 energy of internal system
4 None of the above
Explanation:
Internal energy is the energy associated with every substance, depending on the chemical nature, temperature, pressure and volume. It is the sum of many Pressure and volume. It is the sum of many type of energies such as translational energy, rational energy vibrational energy, electronic energy etc. $\mathrm{U}=\mathrm{U}_{\text {trans }}+\mathrm{U}_{\text {rotat }}+\mathrm{U}_{\mathrm{vib}}+\mathrm{U}_{\text {bonding }}+\mathrm{U}_{\text {electronic }}$
