The addition of 10.00 g of a compound to 250 g of naphthalene lowered the freezing point of the solvent by 1.560 K. The crysocopic constant of naphtalene is Kf=7.026 K kg mol⁻¹. a) Calculate the molar mass of the compound? b) What is the molecular formula if its empirical formula is known to be CH₂O

Q: Explain the origin of osmosis in terms of the thermodynamic and molecular properties of a mixture.

A: ANSWER IS DISCUSSED BELOW :

Q: The addition of 10.00 g of a compound to 250 g of naphthalene lowered the freezing point of the…

A: Given: Mass of the compound=10.00g Mass of naphthalene=250g lowered freezing point=1.560K Kf=7.026 K…

Q: The vapour pressure of water and propanol are 71.9 and 74.0 torr respectively. The vapor pressures…

A:

Q: 4. A solution is made by dissolving 5.0 g of CaCl2 in 50.0 g water. At the same temperature, water…

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Q: A sample of impure benzene has a freezing point of 4.2 C. If the fusion point of pure benzene is 5.5…

A: Colligative properties are the properties which depend on the number of atoms or molecules or ions…

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A:

Q: The molal freezing point constant for water is 1.86oC/m.  At what temperature will a mixture of 10.0…

A: Given information: Mass of ionic solid = 10.0 g Mass of solvent = 1.00 kg Molal freezing point…

Q: The osmotic pressu re of an aqueous solution of urea at 300 K is 150 kPa. Calculate the freezing…

A: Given, Osmotic pressure = 150kPa

Q: The following information pertains to nitrobenzene: Normal melting point = 5.7°C Kf = 7.00°C/m,…

A: Colligative properties are the properties which depend on the number of atoms or molecules or ions…

Q: A solution is prepared by dissolving 2.33 g of C60 (buckminsterfullerene)in 100.0 g of toluene…

A:

Q: What is the mole fraction χ for the solvent in a 1.50 molal solution of ethanol (C2H5OH) in water?

A: We have to find mole fraction χ for the solvent in a 1.50 molal solution of ethanol (C2H5OH) in…

Q: In a study of the properties of aqueous solutions of Th(NO3)4 a freezing-point depression of 0.0703…

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Q: A solution of 2.50 g of a compound of empirical formula C6H5P in 25.0 g of benzene is observed to…

A: Given : Tf = the freezing point of the solution     = 4.3°C  T°f = the freezing point of the pure…

Q: The addition of 10.00 g of a compound to 250 g of naphthalene lowered the freezing point of the…

A: The given data contains, 10 g of a compound is added to 250 g of naphthalene lowered the freezing…

Q: The enthalpy of fusion of anthracene is 28.8 kJ mol−1 and its melting point is 217 °C. Calculate its…

A: Introduction: Solubility: It is defined as the maximum amount of solute that can be dissolved in the…

Q: s) At 20 °C the vapor pressure of benzene is 10 kPa and that of methylbenzene is 2.8 · kPa. If this…

A:

Q: The vapour pressure of water at 20⁰C is 17.51mm. Lowering of vapour pressure of sugar solutions is…

A: Relative lowering of vapour pressure of the solution is defined as the ratio of lowering of vapour…

Q: The addition of 10.00 g of a compound to 250 g of naphthalene lowered the freezing point of the…

A: Depression of freezing point: When a non-volatile solute is added to the solvent, the vapor pressure…

Q: The addition of 100 g of a compound to 750 g of CCl4 lowered the freezing point of the solvent by…

A: Given details, The mass of the compound is 100 g. The mass of CCl4 is 750g. Lowered the freezing…

Q: The vapor pressure of an aqueous sucrose (C12H22O11) solution decreases by 0.475kPa at 25.0°C.…

A: Vapour pressure of sucrose 0.475kPa. Temperature 25.0°C.=298 k. We have to find  concentration of…

Q: Ethanol, an alcohol, has the chemical formula C2H5OH. Calculate the vapour pressure of water above a…

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Q: 6. The vapour pressure of water and propanol are 71.9 and 74.0 torr respectively. The vapor…

A: Soln

Q: The vapour pressure of benzene is 53.3 kPa at 60.6 °C, but it fell to 51.5 kPa when 19.0 g of a…

A: From the given data, at 60.6 °C, the vapour pressure (po) of pure benzene is 53.3 kPa. On adding the…

Q: Calculate the osmotic pressure of a solution at 300 K that is 0.500 M in sucrose and 0.500 M in KCl

A: Given :we have to calculate the osmotic pressure of a solution at 300 K that is 0.500 M in sucrose…

Q: Chloroform, CHCl3, has a vapour pressure of 120 mmHg at a certain temperature. What is the vapour…

A: On adding non-volatile solute to pure solvent, vapour pressure of pure solvent decreases. We know,…

Q: The addition of 28.0 g of a compound to 750 g of tetrachloromethane. CCI4, lowered the freezing…

A: Freezing point depression is given by equation: ∆T = Kf*m where Kf is  molal freezing point…

Q: Formulate the relationship between elevation of boiling point and lowering of vapour pressure and…

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Q: The osmotic pressure of an aqueous solution at 288 K is 99.0 kPa. Estimate the freezing point of the…

A: Given data : Temperature(T) = 288 K Osmotic Pressure(π) = 99 kPa = 0.977 atm For concentration of…

Q: 3.12 The standard molar entropies of water ice, liquid, and vapor are 37.99, 69.91, and 188.83 J K-'…

A: When there is study of different phases of a component, it will come under the study of phase…

Q: A solution of hydrochloric acid in water is 38.00% hydrochloric acid by mass. Its density is 1.1886…

A: Given information: Mass percent of hydrochloric acid = 38.00 % Density = 1.1886 g cm-3

Q: The osmolarity of physiological saline solution is 0.300 osmol/L. Assuming a membrane that is…

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Q: Calculate the ideal solubility of anthracene in benzene at 20°C , given that the enthalpy of fusion…

A: Given that :Enthalpy of fusion∆Hfus = 28.8kJ/mol = 28800 J/mol Melting point = 217°C = 490K…

Q: What is the vapor pressure of benzene when .75 mol of naphthalene is mixed with 1.00 kg of benzene?…

A: MC6H6= 78 g/mol nnapththalene  = 0.75 mol. W C6H6 = 1 Kg = 1000 g nC6H6 = W C6H6/MC6H6= 1000g/(78…

Q: The enthalpy of fusion of anthracene is 28.8 kJ mol−1 and its melting point is 217°C. Calculate its…

A: The ideal solubility in terms of mole fraction is,Given,The enthalpy of fusion of Anthracene is 28.8…

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Q: Calculate the freezing points of 0.40 molal aqueous solutions of (I) NaNO, 4. and (2) MgCI, Assume…

A: NOTE : The formula of salts given is incorrect. The correct formula are 1) NaNO3 and 2) MgCl2. The…

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Q: eaction between H, SO, and LİOH in aqueous solution. Phases are

A: In the balanced chemical reaction number of atoms of each element in product side is equal to number…

Q: The addition of 5.00 g of a compound to 250 g of naphthalene lowered the freezing point of the…

A: Given: Depression in freezing point = 0.780 K Freezing constant: Weight of solute (w) = 5 g Weight…

Q: A solution is prepared by dissolving 22.4 g of MgCl2 in 0.200 L of water. Taking the density of pure…

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Q: The addition of 100 g of compound A to 1 kg of benzene lowered the freezing point of the solvent by…

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Q: Calculate the osmotic pressure at 25°C of an aqueous solution of 1.00 g/L of a protein having molar…

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Q: What is the molar enthalpy change of solution for lithium iodide if the lattice energy is 732 kJ…

A: Enthalpy of solution is the sun of lattice enthalpy and hydration energy.

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.