On the basis of dipole moments and/or hydrogen bonding, explain in a qualitative way the differences in the boiling points of acetone (56.2 °C) and 1-propanol (97.4 °C), which have similar molar masses.

Q: 1. Why does the temperature of a boiling liquid remain constant when heat is continuously being…

A: Every substance has a definite boiling point. When a liquid is heated, then at a particular…

Q: 5. Arrange the following compounds in order of decreasing volatility: acetone, methanol,…

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Q: Is it possible to freeze ammonia? What conditions would be necessary for frozen ammonia?

A: The phase diagram of the ammonia is given as,

Q: Pure naphthalene melts at 80 °C. Pure I-naphthol melts at 123°C. All mixtures of these two…

A: A question based on phase diagram that is to be accomplished.

Q: Why is it not advisable to freeze a sealed glass bottle that is completely filled with water? Use…

A: On decreasing temperature volume is going to be decreased. The same thing happens in the freezer…

Q: Illustrate dissolution of the ionic solid NaCl in water?

A: The compounds can be classified on basis of bonding as: Covalent compounds ionic compounds The…

Q: would you not expect the saturation vapor pressure to fall zero, even at extremely low temperatures?

A: Increase in the temperature, increasing the average energy of the particles present. That means that…

Q: Arrange the following molecules in order of predicted increasing vapor pressure: C2H6 CH2F2 Ne CH3OH…

A:

Q: Sketch the phase diagram of the system NH3/N2H4 given that the two substances do not form a compound…

A: Eutectic point is the point having lowest melting temperature where a mixture of compounds is…

Q: Azeotropic mixtures mix with each other in all proportions, since the composition of the liquid and…

A: Azeotropes are a mixture of two or more liquids which cannot be separated by a simple distillation…

Q: What is the boiling point in Celsius of a solution containing 35.9g of h2O and 490.5g ethanol. molal…

A: The boiling point elevation is calculated as follows: ∆Tb=Kb×mHere, ∆Tb=Elevation in boiling…

Q: how does the properties such as molar mass, structure, density and boiling point of heptane,…

A: The compounds considered are benzene, toluene, heptane and 2,3-dimethylpentane.

Q: Acrylonitrile and ethyl acetate have the same boiling point : 77.2 ° C . In one to two sentences ,…

A: Given: Acrylonitrile and ethyl acetate have the same boiling point : 77.2 ° C.

Q: Discuss the trend in predicted vapor pressure of 1. Butane 2. Acetone 3. Acetic Acid

A: Intermolecular force: The attractive force that withholds two molecules is called as intermolecular…

Q: Acrylonitrile and ethyl acetate have the same boiling point: 77.2ºC. In one to two sentences,…

A: Given information, Boiling point of Acrylonitrile and ethyl acetate are same i.e. 77.2°C.

Q: A mixture consists of 78,1 g benzene (C6H6) and 92,1 g toluene (C7H8). Both substances are volatile,…

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Q: Polymer PXX has a glass transition temperature of 49°C

A: Glass transition temperatures is a temperatures where polymer glassy nature will break into rubbery…

Q: Which has the lowest Vant Hoff’s factor among the following substances?    LiNO3   B.  Ca3(PO4)2…

A: Van't Hoff’s factor is defined as the total number of species present in the solution when 1…

Q: Why is it not advisable to freeze a sealed glass bottle that is completely filled with water? Use…

A: Substances generally expands on heating and contract on cooling. As a result, on heating its density…

Q: A generic solid, X, has a molar mass of 75.0 g/mol. In a constant-pressure calorimeter, 18.8 g of X…

A: Mass of solid = 18.8 g molar mass of solid = 75.0 g/mol mass of water =303 g temperature (T1) =…

Q: A generic solid, X, has a molar mass of 69.9 g/mol. In a constant-pressure calorimeter, 47.9 g of X…

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Q: Arrange the following based on increasing order of volatility: (1) CH3COOCH3 (II) CH3CH2COOCH3 (III)…

A: The given compounds are: (1) CH3COOCH3 (II) CH3CH2COOCH3 (Ill) CH3CH2CH2COOCH3  To arrange on the…

Q: (Q42) Equal amounts of which of the following substances would have the highest vapor pressure at…

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Q: Considering the provided criteria, which set of compounds is ordered CORRECTLY? a.Decreasing normal…

A: Boiling point is temperature at which vapour pressure of liquid become equal to atmospheric…

Q: Using the concept of IMFA, account for the difference in boiling point and melting point of the…

A: According to Intermolecular force of attraction (IMFA), the increase in melting and boiling points…

Q: 3. Give brief but concise answer in the following: a) Medical products are usually seen with a note…

A: Medical products should always be stored at appropriate temperatures as per instructions.

Q: What is the equilibrium vapor pressure of diethyl ether and ethanol at room temperature…

A: Pressure vs Temperature plot is given for Diethyl ether, ethanol and water.

Q: what is the van hoff's factor for benzene

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Q: The addition of 250 mg of naphthalene in benzene elevated the boiling point of 100g of benzene by…

A: Given,  Mass of solute (naphthalene) = 250 mg  Mass of solvent (benzene) = 100 g  Elevation in…

Q: With the addition of 50g of a compound to 750g of CCl4, how many grams of the compound is required…

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Q: Which will have a greater vapor pressure methyl Amine (CH3NH2) or chloroform (CHCl3)? (briefly…

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Q: Which statement is incorrect concerning these two molecules with the same formula, C,H,O? H. 1. H. H…

A: Boiling point:The temperature at which the vapor pressure of the liquid becomes equal to the…

Q: Use Hess' Law to find the ΔH°rxn for P4 + 10Cl2  → 4PCl5

A: Given: PCl5 → PCl3 + Cl2    ΔH°rxn = +157kJ        P4 + 6Cl2  → 4PCl3   ΔH°rxn = -1207 kJ To…

Q: Research on the process of desalination with the use of distillation. Write how vapor-pressure…

A: Desalination is a process that takes away mineral components from saline water. More generally,…

Q: Carbon tetrachloride was a common nonpolar solvent that is now being phased out due to carcinogenic…

A: Given: The heat added is 7.40 J. The initial volume of carbon tetrachloride is 39 mL. Initial…

Q: What weight of NaCl in 800g acetone is needed to bring boiling point to 60°C? (Boiling point of pure…

A: The formula for calculating the elevation in boiling point is given by: ∆Tb  = i × Kb × mWhere ∆Tb…

Q: Explain and sketch the Born-Mayer equation to determine the crystallization energy of NaCl and MgCl2

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Q: Which one of the following substances would be the most soluble in cyclohexane, C6H12?…

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Q: Illustrate the phase diagram of ethyl alcohol and explain the findings.

A: Phase equilibria is based on Gibb’s Phase rule in which the number of degrees of freedom is given by…

Q: 4. A young chemist has synthesized what he believed to be acetaminophen. He measured the melting…

A: Acetaminophen should have melting point exactly between the range of 169-170.5 oC as per literature…

Q: 1. Using the skeletal structure of water, illustrate what happens when water forms hydrogen bonding.…

A: Hydrogen bond: It is defined as a weak chemical bond between an electronegative atom, such as…

Q: Illustrate the phase diagram of ethyl alcohol and explain your findings.

A: Ethanol is a liquid at standard conditions. However, at low temperature and/or very high pressures…

Q: What is the relative saturation of water vapor in air at 25 °C, if the partial pressure of the water…

A: Answer: Relative saturation of water in the air is the ratio of its partial pressure and vapor…

Q: Is entropy increased or decreased in boiling water?

A: Boiling of water is a process in which the liquid water molecules is given more energy to convert…

Q: At a given temperature, which of the following has the highest vapour pressure?   Select one: CH2O…

A: Given molecules are, CH2O   CH3COOH   CH3CN   CH3Cl   C2H6

Q: The normal freezing point of n-octane 1C8H182 is -57 °C. In what temperature range is it a…

A: The importance of Gibbs energy is that it gives information about the spontaneity of the reaction or…