(a)
Interpretation:
Whether compound B has higher molar mass is justified by boiling point data or is erroneous or can be true or false has to be determined.
Concept Introduction:
Dipole-dipole interactions come into play when partial charges of different dipoles interact with each other. Higher polarity between molecules, more will be dipole-dipole interactions between them and vice-versa. Boiling point is governed by strength of dipole-dipole interactions that is measured in terms of dipole moments. Boiling point is directly related to dipole moment of molecules. More dipole moment of molecules, higher will be boiling point and vice-versa.
(b)
Interpretation:
Whether compound A is more viscous is justified by boiling point data or is erroneous or can be true or false has to be determined.
Concept Introduction:
Viscosity is characteristic property of liquid particles that allows resistance to their flow. In other words, it represents opposition to flow of liquids.
(c)
Interpretation:
Whether compound B has stronger intermolecular forces is justified by boiling point data or is erroneous or can be true or false has to be determined.
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
Whether compound B has higher surface tension is justified by boiling point data or is erroneous or can be true or false has to be determined.
Concept Introduction:
Attractive forces that act on molecules present on liquid surface in order to pull them into bulk of liquid is known as surface tension. Due to this surface tension, molecules tend to occupy as minimum surface area as possible.
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ACHIEVE/CHEMICAL PRINCIPLES ACCESS 1TERM
- Calculate AH° for the reaction: CS2(1) + 202(g) CO2(g) + 2S02(9) AH;° CO2 (9) = -393.5 kJ/mol AH;° SO2 (9) = -296.8 kJ/mol AH;° CS2 (1) = 87.9 kJ/molarrow_forwardThe compound whose structure is shown here is acetyl acetone. It exists in two forms:the enol form and the keto form The molecule reacts with OH–to form an anion, [CH3COCHCOCH3] (often abbreviatedacac–for acetylacetonate ion). One or the most interesting aspects of this anion is thatone or more of them can react with transition metal cations to give stable, highlycolored compounds (a) Are the keto and enol forms of acetylacetone resonance forms? Explain youranswer.(b) What is the hybridization or each atom (except H) in the enol form? What changesin hybridization occur when it is transformed into the keto form?(c) What are the electron-pair geometry and molecular geometry around each C atomin the keto and enol forms? What changes in geometry occur when the keto formchanges to the enol form?(d) Draw three possible resonance structures for the acac–ion.(e) Is cis-trans isomerism possible in either the enol or the keto form of acetylacetone?(f) Is the enol form of acetylacetone polar?…arrow_forwarda NBS hv, CCl4 (a) Br (b) (c) Br COD d •••d (d) Br Brarrow_forward
- 1. (A) Provide an example for each of the following: (a) a molecule that only has dispersion forces as IMFs (b) a molecule that has dispersion and dipolar IMFs (c) a molecule that can experience hydrogen bonding (B) Why does NH3 have a higher boiling point than BH3? To answer this question, draw out the Lewis structure for each molecule, and then draw out the VSEPR shape for each molecule.arrow_forwardThe carbon–carbon bond length in C2H2 is 1.20 Å, that in C2H4 is 1.34 Å, and that in C2H6 is 1.53 Å. Near which of these values would you predict the bond length of C2 to lie? Is the experimentally observed value, 1.31 Å, consistent with your prediction?arrow_forward4. (a) Of the four Molecules shown below, two are geometric isomers of each other. Identify them then explain your answer. HO HO OH HO на надом OH HO OH OH Molecule 3 Molecule 4 Molecule 5 Molecule 6 4. (b) Use the Chem Drawing tool to examine the charge distribution of Molecules 5 and 6. What do you see? 4. (c) Of the remaining molecules (Molecule 3 and Molecule 4), which cannot have geometric isomers?arrow_forward
- Give detailed solution with explanation needed..don't give Handwritten answer....give correct answerarrow_forwardA particular allotrope of nitrogen, N4, was first detected in 2002. (Allotrope just means a chemical form in which an element can exist. Oxygen, for example, has two allotropes on earth: O2 and O3.) The all-nitrogen compound only lasts a short while before breaking down to N2. The compound cannot be isolated, so its structure is not yet confirmed experimentally; we can only hypothesize what its bonding and shape are. This allotrope is generally believed to be either a single ring of four nitrogens or a single chain of four nitrogens. 1. Draw the Lewis structure for both the linear form and the single ring form.arrow_forwardA particular allotrope of nitrogen, N4, was first detected in 2002. (Allotrope just means a chemical form in which an element can exist. Oxygen, for example, has two allotropes on earth: O2 and O3.) The all-nitrogen compound only lasts a short while before breaking down to N2. The compound cannot be isolated, so its structure is not yet confirmed experimentally; we can only hypothesize what its bonding and shape are. This allotrope is generally believed to be either a single ring of four nitrogens or a single chain of four nitrogens. 2. Assign formal charges to each atom in both structures. Which structure is more likely someday to be confirmed experimentally?arrow_forward
- Give a reason why each of the following statements is a safeprediction:(a) Every compound of Rb with a nonmetal is ionic in character.(b) Every compound of nitrogen with a halogen element is amolecular compound.(c) The compound MgKr2 does not exist.(d) Na and K are very similar in the compounds they form withnonmetals.(e) If contained in an ionic compound, calcium (Ca) will be inthe form of the doubly charged ion, Ca2arrow_forward(a) In one of the two boxes below, draw a wedge and dashed wedge structure (picture) of CH3Cl that best illustrates the geometry about the central atom. In the other box, draw another picture of the model from a different angle (viewpoint). (b) In CH3Cl, are the three hydrogen atoms equivalent (i.e., do they have identical environments with respect to the other atoms adjacent to themselves)? Briefly explain the evidence for your answerarrow_forward(c) Draw the set of five 3d orbitals. Label each orbital and include the set of Cartesian (x,y,z) axes to show the orientation of the orbital. Clearly show the orbital phases.arrow_forward
- Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning