1) Give the term for the temperature at which the gas and liquid phases form a s

Question

1) Give the term for the temperature at which the gas and liquid phases form a supercritical fluid.

2) Which has the smallest dipole-dipole forces? A) CH3Cl   B) HBr C) O2 D) NO  

3) Which of the following statements is FALSE? A) The rate of vaporization increases with increasing surface area. B) The rate of vaporization increases with decreasing strength of intermolecular forces. C) The rate of vaporization increases with increasing temperature. D) Molecules with hydrogen bonding are more volatile than compounds with dipole-dipole forces. E) None of the above are false.

4)   The forces between polar molecules is known as ________.

5)   How many compounds, of the ones listed below, have hydrogen bonding?
CH3CH2CH2NH2    CH3CH2NHCH2CH3   (CH3CH2)2NCH2CH3

Explanation / Answer

1) critical temperature

2)Well, O2 has momentary dipole- dipole force of attration if you are counting that but the next in line would be CH3Cl

3)d

4)dipole-dipole forces

5) CH3CH2NHCH2CH3

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