Concept explainers
(a)
Interpretation:
The solubility of methyl alcohol and water in each other needs to be explained.
Concept Introduction:
Organic compounds are mainly composed of C and H atoms. It is the branch of chemistry that deals with preparation, reactions, and properties of organic compounds. The atom or group of atoms which are responsible for all special chemical and physical properties of a substance is called as a
Organic compounds are mainly covalent compounds in which C-C, C-H and C-X bonds are present. Here 'X' indicates heteroatom which is present in functional group. The C-C and C-H bonds are non-polar covalent bonds as the difference between the electronegativity of C and H is very less. On the contrary the polarity of C-X bond depends on the electronegativity of X. If X is O, N or halogen, the C-X bond will be a polar covalent bond that makes the polar organic molecule.
(b)
Interpretation:
The solubility of methylene chloride and benzene in each other needs to be explained.
Concept Introduction:
Organic compounds are mainly composed of C and H atoms. It is the branch of chemistry that deals with preparation, reactions, and properties of organic compounds. The atom or group of atoms which are responsible for all special chemical and physical properties of a substance is called as a functional group. These groups are bonded to the parent carbon chain of the organic molecule.
Organic compounds are mainly covalent compounds in which C-C, C-H and C-X bonds are present. Here 'X' indicates heteroatom which is present in functional group. The C-C and C-H bonds are non-polar covalent bonds as the difference between the electronegativity of C and H is very less. On the contrary the polarity of C-X bond depends on the electronegativity of X. If X is O, N or halogen, the C-X bond will be a polar covalent bond that makes the polar organic molecule.
(c)
Interpretation:
The solubility of methylene chloride and benzene in each other needs to be explained.
Concept Introduction:
Organic compounds are mainly composed of C and H atoms. It is the branch of chemistry that deals with preparation, reactions, and properties of organic compounds. The atom or group of atoms which are responsible for all special chemical and physical properties of a substance is called as a functional group. These groups are bonded to the parent carbon chain of the organic molecule.
Organic compounds are mainly covalent compounds in which C-C, C-H and C-X bonds are present. Here 'X' indicates heteroatom which is present in functional group. The C-C and C-H bonds are non-polar covalent bonds as the difference between the electronegativity of C and H is very less. On the contrary the polarity of C-X bond depends on the electronegativity of X. If X is O, N or halogen, the C-X bond will be a polar covalent bond that makes the polar organic molecule.
(d)
Interpretation:
The solubility of water and toluenein each other needs to be explained.
Concept Introduction:
Organic compounds are mainly composed of C and H atoms. It is the branch of chemistry that deals with preparation, reactions, and properties of organic compounds. The atom or group of atoms which are responsible for all special chemical and physical properties of a substance is called as a functional group. These groups are bonded to the parent carbon chain of the organic molecule.
Organic compounds are mainly covalent compounds in which C-C, C-H and C-X bonds are present. Here 'X' indicates heteroatom which is present in functional group. The C-C and C-H bonds are non-polar covalent bonds as the difference between the electronegativity of C and H is very less. On the contrary the polarity of C-X bond depends on the electronegativity of X. If X is O, N or halogen, the C-X bond will be a polar covalent bond that makes the polar organic molecule.
(e)
Interpretation:
The solubility of cyclohexanone and water in each other needs to be explained.
Concept Introduction:
Organic compounds are mainly composed of C and H atoms. It is the branch of chemistry that deals with preparation, reactions, and properties of organic compounds. The atom or group of atoms which are responsible for all special chemical and physical properties of a substance is called as a functional group. These groups are bonded to the parent carbon chain of the organic molecule.
Organic compounds are mainly covalent compounds in which C-C, C-H and C-X bonds are present. Here 'X' indicates heteroatom which is present in functional group. The C-C and C-H bonds are non-polar covalent bonds as the difference between the electronegativity of C and H is very less. On the contrary the polarity of C-X bond depends on the electronegativity of X. If X is O, N or halogen, the C-X bond will be a polar covalent bond that makes the polar organic molecule.
(f)
Interpretation:
The solubility of ethyl alcohol and isopropyl alcohol in each other needs to be explained.
Concept Introduction:
Organic compounds are mainly composed of C and H atoms. It is the branch of chemistry that deals with preparation, reactions, and properties of organic compounds. The atom or group of atoms which are responsible for all special chemical and physical properties of a substance is called as a functional group. These groups are bonded to the parent carbon chain of the organic molecule.
Organic compounds are mainly covalent compounds in which C-C, C-H and C-X bonds are present. Here 'X' indicates heteroatom which is present in functional group. The C-C and C-H bonds are non-polar covalent bonds as the difference between the electronegativity of C and H is very less. On the contrary the polarity of C-X bond depends on the electronegativity of X. If X is O, N or halogen, the C-X bond will be a polar covalent bond that makes the polar organic molecule.
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Chapter 1 Solutions
EBK A SMALL SCALE APPROACH TO ORGANIC L
- What would be the freezing point of a solution formed by adding 1.0 mole of glucose (a molecular compound) to the following amounts of water? a. 250 g (0.25 kg) b. 500 g (0.500 kg) c. 1000 g (1.000 kg) d. 2000 g (2.000 kg)arrow_forwardA forensic chemist is given a white solid that is suspected of being pure cocaine (C17H21NO4, molar mass = 303.35 g/mol). She dissolves 1.22 0.01 g of the solid in 15.60 0.01 g benzene. The freezing point is lowered by 1.32 0.04C. a. What is the molar mass of the substance? Assuming that the percent uncertainty in the calculated molar mass is the same as the percent uncertainty in the temperature change, calculate the uncertainty in the molar mass. b. Could the chemist unequivocally state that the substance is cocaine? For example, is the uncertainty small enough to distinguish cocaine from codeine (C18H21NO3, molar mass = 299.36 g/mol)? c. Assuming that the absolute uncertainties in the measurements of temperature and mass remain unchanged, how could the chemist improve the precision of her results?arrow_forwardCalculate the vapor pressure of water over each of the following ethylene glycol (C2H6O2) solutions at 22C (vppurewater=19.83mmHg). Ethylene glycol can be assumed to be nonvolatile. (a) Xethyleneglycol=0.288(b) percentethyleneglycolbymass=39.0(c) 2.42 m ethylene glycolarrow_forward
- An unknown compound contains only carbon, hydrogen, and oxygen. Combustion analysis of the compound gives mass percents of 31.57% C and 5.30% H. The molar mass is determined by measuring the freezing-point depression of an aqueous solution. A freezing point of 5.20C is recorded for a solution made by dissolving 10.56 g of the compound in 25.0 g water. Determine the empirical formula, molar mass, and molecular formula of the compound. Assume that the compound is a nonelectrolyte.arrow_forwardRationalize the temperature dependence of the solubility of a gas in water in terms of the kinetic molecular theory.arrow_forwardPredict the relative solubility of each compound in the two solvents, based on the intermolecular attractions. (a) Is potassium iodide more soluble in water or in methylene chloride (CH2Cl2)? (b) Is toluene (C6H5CH3) more soluble in benzene (C6H6) or in water? (c) Is ethylene glycol (C2H4(OH)2) more soluble in hexane (C6H14) or in ethanol (C2H5OH)?arrow_forward
- Freezing point depression is one means of determining the molar mass of a compound. The freezing point depression constant of benzene is 5.12 C/m. a. When a 0.503 g sample of the white crystalline dimer is dissolved in 10.0 g benzene, the freezing point of benzene is decreased by 0542 C. Verify that the molar mass of the dimer is 475 g/mol when determined by freezing point depression. Assume no dissociation of the dimer occurs. b. The correct molar mass of the dimer is 487 g/mol. Explain why the dissociation equilibrium causes the freezing point depression calculation to yield a lower molar mass for the dimer.arrow_forwardA liquid solution consists of 0.30 mole fraction ethylene dibromide, C2H4Br2, and 0.70 mole fraction propylene dibromide, C2H4Br2. Both ethylene dibromide and propylene dibromide are volatile liquids; their vapor pressures at 85C are 173 mmHg and 127 mmHg, respectively. Assume that each compound follows Raoults law in the solution. Calculate the total vapor pressure of the solution.arrow_forwardDistinguish between dispersion methods and condensation methods for preparing colloidal systems.arrow_forward
- 1. Vapor pressure: Arrange the following aqueous solutions in order of increasing vapor pressure at 25°C: 0.35 m C2H4(OH)2 (ethylene glycol, nonvolatile solute); 0.50 m sugar; 0.20 m KBr; and 0.20 m Na2SO4. C2H4(OH)2 < sugar < KBr < Na2SO4 Na2SO4 < sugar < KBr < C2H4(OH)2 sugar < C2H4(OH)2 < KBr < Na2SO4 KBr < sugar < Na2SO4 < C2H4(OH)2arrow_forwardVapor-pressure lowering is a colligative property, as are freezing-point depression and boiling-point elevation. What is a colligative property? Why is the freezing point depressed for a solution as compared to the pure solvent? Why is the boiling point elevated for a solution as compared to the pure solvent? Explain how to calculate T for a freezing-point depression problem or a boiling-point elevation problem. Of the solvents listed in Table 10-5, which would have the largest freezing-point depression for a 0.50 molal solution? Which would have the smallest boiling-point elevation for a 0.50 molal solution? A common application of freezing-point depression and boiling-point elevation experiments is to provide a means to calculate the molar mass of a nonvolatile solute. What data are needed to calculate the molar mass of a nonvolatile solute? Explain how you would manipulate these data to calculate the molar mass of the nonvolatile solute.arrow_forwardSodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride (CaCl2) is sometimes used for this purpose too. Let us compare the effectiveness of equal masses of these two compounds in lowering the freezing point of water, by calculating the freezing point depression of solutions containing 200. g of each salt in 1.00 kg of water. (An advantage of CaCl2 is that it acts more quickly because it is hygroscopic, that is. it absorbs moisture from the air to give a solution and begin the process. A disadvantage is that this compound is more costly.)arrow_forward
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