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Concept explainers
(a)
Interpretation:
The member of the given pair which is expected to have high boiling point has to be identified.
Concept Introduction:
The derivative of alkane with halogen instead of one or more hydrogen atoms is known as halogenated alkane. If the same is present in cycloalkane, then it is known as halogenated cycloalkane. They are product of reaction between alkane/cycloalkane with halogens.
Physical properties of halogenated
Boiling point of halogenated hydrocarbon is usually higher than the corresponding hydrocarbon. This is because, there is a polarity difference between carbon and halogen atom. This result in increased dipole‑dipole interactions.
General trend considering the boiling point and melting point of halogenated hydrocarbon are,
- Melting and boiling points increase with the increase in size of alkyl groups that is present. Due to the increasing intermolecular forces, the melting and boiling point increases.
- As the size of halogen atom increases, the melting point and boiling point also increases.
Halogenated hydrocarbons do not possess hydrogen bonding capability. Therefore, solubility of halogenated hydrocarbon is limited.
(b)
Interpretation:
The member of the given pair which is expected to have high boiling point has to be identified.
Concept Introduction:
The derivative of alkane with halogen instead of one or more hydrogen atoms is known as halogenated alkane. If the same is present in cycloalkane, then it is known as halogenated cycloalkane. They are product of reaction between alkane/cycloalkane with halogens.
Physical properties of halogenated alkanes:
Boiling point of halogenated hydrocarbon is usually higher than the corresponding hydrocarbon. This is because, there is a polarity difference between carbon and halogen atom. This result in increased dipole‑dipole interactions.
General trend considering the boiling point and melting point of halogenated hydrocarbon are,
- Melting and boiling points increase with the increase in size of alkyl groups that is present. Due to the increasing intermolecular forces, the melting and boiling point increases.
- As the size of halogen atom increases, the melting point and boiling point also increases.
Halogenated hydrocarbons do not possess hydrogen bonding capability. Therefore, solubility of halogenated hydrocarbon is limited.
(c)
Interpretation:
The member of the given pair which is expected to have high boiling point has to be identified.
Concept Introduction:
The derivative of alkane with halogen instead of one or more hydrogen atoms is known as halogenated alkane. If the same is present in cycloalkane, then it is known as halogenated cycloalkane. They are product of reaction between alkane/cycloalkane with halogens.
Physical properties of halogenated alkanes:
Boiling point of halogenated hydrocarbon is usually higher than the corresponding hydrocarbon. This is because, there is a polarity difference between carbon and halogen atom. This result in increased dipole‑dipole interactions.
General trend considering the boiling point and melting point of halogenated hydrocarbon are,
- Melting and boiling points increase with the increase in size of alkyl groups that is present. Due to the increasing intermolecular forces, the melting and boiling point increases.
- As the size of halogen atom increases, the melting point and boiling point also increases.
Halogenated hydrocarbons do not possess hydrogen bonding capability. Therefore, solubility of halogenated hydrocarbon is limited.
(d)
Interpretation:
The member of the given pair which is expected to have high boiling point has to be identified.
Concept Introduction:
The derivative of alkane with halogen instead of one or more hydrogen atoms is known as halogenated alkane. If the same is present in cycloalkane, then it is known as halogenated cycloalkane. They are product of reaction between alkane/cycloalkane with halogens.
Physical properties of halogenated alkanes:
Boiling point of halogenated hydrocarbon is usually higher than the corresponding hydrocarbon. This is because, there is a polarity difference between carbon and halogen atom. This result in increased dipole‑dipole interactions.
General trend considering the boiling point and melting point of halogenated hydrocarbon are,
- Melting and boiling points increase with the increase in size of alkyl groups that is present. Due to the increasing intermolecular forces, the melting and boiling point increases.
- As the size of halogen atom increases, the melting point and boiling point also increases.
Halogenated hydrocarbons do not possess hydrogen bonding capability. Therefore, solubility of halogenated hydrocarbon is limited.
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Chapter 12 Solutions
General, Organic, and Biological Chemistry
- Q8. Draw the mechanism for this halogenation reaction. Show all steps including initiation, propagation, and recombination. Cl₂, hv CI Br Br2, hv, heatarrow_forwardQ6. Given the following alkanes, draw the most likely product to form upon monohalogenation with Br2 (keep in mind that this may not be the only product to form though). If the reaction was performed with Cl2 would there be more or less selectivity in the desired product formation? Why? (a) (b) (c)arrow_forwardQ4. Radicals a. For the following indicated bonds, rank them in order of decreasing AH° for homolytic cleavage. Based on your answer, which bond would be most likely to break homolytically? (c) CH3 CH3 H3C CH3 (a) CH3 (b)arrow_forward
- Q1. (a) Draw equations for homolytic and heterolytic cleavages of the N-H bond in NH3. Use curved arrows to show the electron movement. (b) Draw equations for homolytic and heterolytic cleavages of the N-H bond in NH4*. Use curved arrows to show the electron movement.arrow_forwardohing Quantitative Relationships 425 The specific heats and atomic masses of 20 of the elements are given in the table below. Use a graphical method to determine if there is a relationship between specific heat and the atomic mass. a. b. C. d. e. If your graphs revealed relationship between specific heat and atomic revealed a mathematical mass, write down an equation for the relationship. Comment on the usefulness of the determination of specific heat as a method for identifying an element. Would specific heat alone give you much confidence with regard to the identity of the element? If you think measurement of another property would be needed to support an identification, what property would you measure and why? The elements listed in the table are all selected metals. The values for nitrogen, oxygen, fluorine and neon are 1.040, 0.918, 0.824 and 1.030 J/g K respectively. Do these elements fit your equation? element atomic mass specific heat (almol) (Jig K) magnesium 24.305 1.023…arrow_forwardPlease correct answer and don't use hand rating and don't use Ai solutionarrow_forward
- Nonearrow_forwardDraw Newman projects for each of the following molecules with 3 different rotational angles from carbon 2 to carbon 3. Rank your structures from lowest to highest energy. What causes the energy differences? Label the overlap. a. b. Br OH C. Br Brarrow_forwardDraw the stereoisomers of 3,5-diethylcylopentane. Identify the different relationships between each molecules (diasteromers, enantiomers, meso compounds, etc.)arrow_forward
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