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- Rubbing alcohol is the common name for 2-propanol (iso- propanol), C3H7OH. (a) Draw the three-dimensional structure of the 2-propanol molecule and predict the geometry around each carbon atom. (b) Is the 2-propanol molecule polar or nonpolar? (c) What kinds of intermolecular attractive forces exist between the 2-propanol molecules? (d) The isomer 1-propanol has the same molecular weight as 2-propanol, yet 2-propanol boils at 82.6 °C and 1-propanol boils at 97.2 °C. Explain the difference.Which member of each of the following pairs of substances would you expect to have a higher boiling point? (a) O2 and Cl2, (b) SO2 and CO2, (c) HF and HIShown below are interactions that occur between ions and polar compounds (cyclopentyl alcohol, dimethyl ether, dimethyl sulfide, and water). Examine the types of intermolecular forces in which each of the following molecules participate, then rank the following interactions between molecules and ions from the weakest to the strongest based on those intermolecular forces and trends in electronegativity.
- A student investigates the physical and chemical properties of various carbon-containing compounds. Thr complete Lewis electron-dot diagrams and boiling points for two compounds, Q and Z, are shown in the following table: B) Any C — H bond in compound Q is shorter than the S — H bond in compound Z. Explain the reason for this difference using principles of atomic structure.In each of the following groups of substances, pick the one that has the given property. Draw Lewis structures to support your answers and upload in 'Show My Work' (required). THERE IS ONLY ONE SUBMISSION FOR EACH PART OF THIS QUESTION! (a) highest boiling point O CCl4 CF4 CBr4 (b) lowest freezing point O LIF Cl₂ HBr (c) smallest vapor pressure at 25°C O CH3OCH3 O CH3CH₂OH CH3CH2CH3Which side of the structure of KHP is more polar than the other?
- Name the type(s) of intermolecular forces that exists between molecules (or basic units) in each of the following species: (a) benzene (C6H6) (b) CH3Cl (c) PF3Which of these molecules exhibits only the London dispersion forces (LDF) of interactions? (A) H2O (B) CO2 (C) SO2 (D) N2OHow many of the following compounds exhibit hydrogen bonding in the pure liquid state? (The lone pair electrons are NOT shown) (A) 5 (B) 3 (C) 4 (D) 2 (E) 1
- Should H2S or COCl2 have the higher boiling point? Briefly explain whyWhich of the following is FALSE about the water molecule? A Its molecular geometry is not linear. В The atoms comprising the water molecule are covalently bonded with one another. (c) Intermolecular forces among water molecules are the least extensive when it is in liquid form. D) The H atoms bear the partial positive charge.Calculate the lattice energy of ionic solid MX, given the following thermodynamic data: M(s) + X2(9) → MX(s) AHræn M(s) → M(g) AHrän= 88. kJ Bond energy of X2 = 196. kJ/mol lonization energy for M(s) = 485. kJ /mol Electron affinity of X = -281. kJ/mol AHrxn = -616. Enter your answer in decimal notation, rounded to the appropriate number of significant figures.
