(a)
Interpretation:
Whether
Concept Introduction:
The bond formed between the hydrogen atom attached to electronegative atom and other electronegative atoms such as fluorine, oxygen, and nitrogen is termed as hydrogen bond. It occurs in polar molecules that have dipole-dipole interaction. It is denoted by dotted line.
(b)
Interpretation:
Whether
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
Whether
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
Whether
Concept Introduction:
Refer to part (a).
(e)
Interpretation:
Whether
Concept Introduction:
Refer to part (a).
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EBK FOUNDATIONS OF COLLEGE CHEMISTRY
- Which of the following molecules form hydrogen bonds with water? Draw molecular pictures illustrating these hydrogen bonds. (a) CH4 (b) I2 (c) HF (d) H3COCH3 (e) (CH3)COCHarrow_forwardRank the following in order of decreasing(a) Boiling point: O₂, Br₂, As(s)(b) ΔH(vap): Cl₂, Ar, I₂arrow_forwardWhich has the greater polarizability? Explain.(a) Br⁻ or I⁻ (b) CH₂=CH₂ or CH₃—CH₃(c) H₂O or H₂Searrow_forward
- (a) 4. Identify the intermolecular forces which can operate between molecules of the following pure compounds: (b) N. (c) Numbering N. (d) 5. For the compounds in the previous question, what intermolecular forces would operate between the compound and water?arrow_forward(a) What atoms must a molecule contain to participatein hydrogen bonding with other molecules of the samekind? (b) Which of the following molecules can formhydrogen bonds with other molecules of the same kind:CH3F, CH3NH2, CH3OH, CH3Br?arrow_forwardWhich of these substances would exhibit the highest boiling point at 1.00 atm? (A) CH3CH2CH2CH3 (B) CH3CH2Cl (C) CH3OH (D) CH3CH2OHarrow_forward
- Explain, using intermolecular forces, why at room temperature, petrol (mainly octane, C8H18) is a liquid, while candle wax (C23H48) is a solidarrow_forwardWhich substance has the higher boiling point? Explain.(a) CH3CH2OH or CH3CH2CH3 (b) NO or N2(c) H2S or H2Tearrow_forward6. Ethanoic acid (CH3COOH) has a much lower vapor pressure than ethanol (CH3CH2OH). What is the most reasonable explanation? (A) The polarizability of two oxygen atoms increases the London forces of attraction in ethanoic acid compared with ethanol. (B) Hydrogen bonding in ethanoic acid is the strongest attractive force and is mainly responsible for the observed data. (C) Both ethanol and ethanoic acid have an – OH, so the difference is the dipole of the second oxygen that increases the attractive forces. (D) Ethanol has an - OH group and can hydrogen bond; therefore, the London forces must cause the effect.arrow_forward
- 5. Arrange the following compounds in the order of decreasing strength of London dispersion forces. (a) CCI4, CF4, CBr4 (b) CH4, CH3CH3, CH3CH2CH3 (c) Ar, He, Nearrow_forwardYou have samples of four compounds: dimethyl ether,methane, difluoromethane, and ethanol. You measurethe boiling points of the compounds as -128 °C, -52 °C,-25 °C, and 78 °C, but then lose the labels for each sample.Make the following predictions: (a) Which compoundboils at -128 °C? (b) Which boils at -52 °C? (c) Whichboils at -25 °C? (d) Which boils at 78 °C?arrow_forwardWrite a balanced chemical reaction for the condensationreaction between H3PO4 molecules to form H5P3O10.arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning