Question

In: Chemistry

In each pair, indicate which substance has the stronger intermolecular forces and explain your reasoning: (a)...

In each pair, indicate which substance has the stronger intermolecular forces and explain your reasoning: (a) Ne, Ar; (b) NF3, BF3; (c) SiH4, GeH4; (d) NaF, HF.

Solutions

Expert Solution

a) Ar

Ne and Ar have dispersion forces which increases with size and mass. Since, Ar is a larger atom with a greater molecular mass, it would have greater dispersion forces.

b) NF3

NF3 is a polar molecule and has dipole-dipole interactions, along with dispersion forces. Whereas, BF3 is a non-polar molecule(due to its trigonal planar geometry, the dipole moments of the three B-F bonds cancel each other) and has only dispersion forces. Hence, NF3 has stronger intermolecular forces.

c) GeH4

Both SiH4 and GeH4 molecules are non-polar (due to the tetrahedral geometry). They have only dispersion forces. Due to a greater mass, GeH4 has stronger dispersion forces.

d) NaF

NaF is an ionic compound and has ionic forces which are strongest of all intermolecular forces. HF is a polar compound and has hydrogen-bonding.

(Note: Though H-bonding are considered to be strong intermolecular forces; they are not as strong as ionic forces)


Related Solutions

For each pair of substance, identify the dominant intermolecular forces in each substance, (and select the...
For each pair of substance, identify the dominant intermolecular forces in each substance, (and select the substance with the stronger intermolecular forces) A.) MgCl2 or PCl3 B.) CH3NH2 or CH3F C.) CH3OH or CH3CH2OH D.) Hexane or Dimethylbutane Please show all steps clearly.
In each substance listed, indicate all of the intermolecular forces that are present AND draw the...
In each substance listed, indicate all of the intermolecular forces that are present AND draw the strongest force. a) Pure NH3 b) Pure H3C-O-CH3 c) A mixture of H3C-O-CH3
In each pair, identify all the intermolecular forces, and select the substance with the higher boiling...
In each pair, identify all the intermolecular forces, and select the substance with the higher boiling point. (a) CH3Br or CH3F What intermolecular forces are present? (Select all that apply.) dipole-dipole or dispersion or H bonds Which substance has the higher boiling point ? CH3Br or CH3F     (b) CH3CH2OH or CH3OCH3 What intermolecular forces are present? dipole-dipole or dispersion or H bonds Which substance has the higher boiling point ? CH3CH2OH or CH3OCH3     (c) C2H6 or C3H8 What intermolecular forces...
In each pair, identify all the intermolecular forces, and select the substance with the higher boiling...
In each pair, identify all the intermolecular forces, and select the substance with the higher boiling point. (a) CH3Br or CH3F What intermolecular forces are present? (Select all that apply.) dipole-dipole dispersion H bonds (b) CH3CH2OH or CH3OCH3 What intermolecular forces are present? dipole-dipole dispersion H bonds (c) CH4 or CCl4 What intermolecular forces are present? dipole-dipole dispersion H bonds
Classify each substance based on the intermolecular forces present in that substance.
Classify each substance based on the intermolecular forces present in that substance. Hydrogen bonding, dipole-dipole, and dispersion Dipole-dipole and dispersion only Dispersion only 
Classify each substance based on the intermolecular forces present in that substance.
Classify each substance based on the intermolecular forces present in that substance. A Dipole-dipole and dispersion only B. dispersion only C. Hydrogen bonding, dipole-dipole, and dispersion H2O HCI COCH4
4. What kinds of intermolecular forces are present in each substance? List all the intermolecular forces.
4. What kinds of intermolecular forces are present in each substance? List all the intermolecular forces.  HCI H2O Br2 He CH3OH5. Provide the names of the functional groups in the spaces provided. 
Explain and identify the intermolecular forces that are present in each substance? a. N2 b. NH3...
Explain and identify the intermolecular forces that are present in each substance? a. N2 b. NH3 c. C2H6 d. CH3CCH3
3. Which reactant in each of the following pairs is a stronger nucleophile? Explain your reasoning....
3. Which reactant in each of the following pairs is a stronger nucleophile? Explain your reasoning. (3) a. NaOH or H2O​​​ b. H2O or CH3COO-  ​​​ c. I- or Cl-
Classify each substance based on the intermolecular forces present in that substance. Hydrogen bonding, dipole–dipole, and...
Classify each substance based on the intermolecular forces present in that substance. Hydrogen bonding, dipole–dipole, and dispersionDipole–dipole and dispersion onlyDispersion only H2O CO CH3Cl H2
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT