Concept explainers
(a)
Interpretation:
Shapes of
Concept Introduction:
Valence shell electron pair repulsion theory or VSEPR model is used to determine geometry of molecules. This is done with help of number of electron pairs that are present around central atom. According to this model, electron groups are arranged in such manner that minimizes repulsion with other electrons.
(b)
Interpretation:
Shapes of
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
Shapes of
Concept Introduction:
Refer to part (a).
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Chemical Principles: The Quest for Insight
- (a) What are the C¬C¬C bond angles in diamond?(b) What are they in graphite (in one sheet)? (c) Whatatomic orbitals are involved in the stacking of graphitesheets with each other?arrow_forward(a) How do the structures of these molecules account for these differences in boiling point? Provide a full account of the structures and their influence on the differences in this physical property. Name Boiling Point methane -161.6 °C methanol 64.7 °C propane -42 °C propan-1-ol 97 °Carrow_forward7. (a) What effect do the polarity, size, and shape of a molecule have on the physical properties of the molecule? (b) How do these factors influence intermolecular forces? K/UT/Iarrow_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_forwardQ#02. Answer the followings: (a) Elucidate the salient features of reciprocal lattice and how does it help to investigate the crystal structures.arrow_forwardDoes SF₆(boiling point 16C at 1 atm) behave more ide-ally at 150C or at 20C? Explain.arrow_forward
- 6. 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_forwardWhich type of intermolecular force accounts for each of these differences? (a) CH3OH boils at 65 °C; CH3SH boils at 6 °C. (b) Xe is a liquid at atmospheric pressure and 120 K, whereas Ar is a gas under the same conditions. (c) Kr, atomic weight 84 amu, boils at 120.9 K, whereas Cl2, molecular weight about 71 amu, boils at 238 K. (d) Acetone boils at 56 °C, whereas 2-methylpropane boils at -12 °C. CH3 CH3 O C CH3 CH3 CH3 CH Acetone 2-Methylpropanearrow_forward5d. Comparing C;H3 (1) and C;H;O (1), which would we expect to have the higher boiling point? (а) С,Н; (1) (b) С,H,О (1) (с) same 5e. Comparing C;Hs (1) and C3H&O (1), which would we expect to have the higher equilibrium vapor pressure? (а) С,H; (1) (b) С,Н:О (1) (с) same 5f. Describe how you could make 100.0 mL (aq) of a 1.0 mM C3H8 (aq) solution from an 8.0 mM C3H8 (aq) solution.arrow_forward
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- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning