9.) Quinine was the first drug widely used to treat malaria, and it remains the treatment of choice for severe cases. A solution prepared by dissolving 10.0 g of quinine in 50.0 ml of ethanol has a freezing point 1.55°C below that of pure ethanol. Determine the molar mass of quinine. (The density of ethanol is 0.789 g/mL.) Assume that quinine is a nonelectrolyte. ATf = Ktm

Q: Determine the molal concentration of a sugar solution in water that has a freezing point of –2.1°C.…

A: Given information,    Freezing point = –2.1°C    Value of Kf = 1.86°C/m for water

Q: Calculate the freezing point of a solution of 35.0 g methyl salicylate, C7H6O2, dissolved in 800. g…

A:

Q: Calculate the freezing point of a 1.86 M solution of MgCl2 in water. MgCl2 is a strong electrolyte

A: Applying concept of dipression in freezing point. ∆Tf= i×Kf× m

Q: Calculate the mass percent of a NaClNaCl solution in which 108 gg of NaClNaCl is dissolved in 4.72…

A:

Q: Calculate the molality of alum and the molality of the cream of tartar in the solution of mordant.…

A: Given: mass of Alum = 2 g mass of cream of tartar = 1 g Volume of water = 100 mL molar mass of Alum…

Q: Example 8: An aqueous solution is 0.907 M Pb(NO3),. Determine the molality of lead (II) nitrate,…

A:

Q: An aqueous solution containing 36.8 g of an unknown molecular (non-electrolyte) compound in 143.2 g…

A: Solution is made up of two components which are solute and solvent. Solute is present in the minor…

Q: At 25°C, the vapor pressure of pure benzene is  P1== 0.1252 atm. Suppose 6.40 g of naphthalene,…

A: The Raoult's for non volatile solute can be expressed as,…

Q: 10.0 g of an organic substance is dissolved in 80.0 g of benzene. The freezing point of the solution…

A: Mass of benzene = 80.0 g = 0.080 Kg mass of organic solute = 10.0 g Freezing point of this solution=…

Q: a 1 molar solution of hcl in benzene has a freezing point of 0.4 celsius. Is HCl an electrolyte in…

A: Given that : We have to determine whether HCl is an electrolyte or not in benzene if 1M of HCl in…

Q: A solution was prepared by dissolving solute T in 120 g benzene. The freezing point of this solution…

A: Given : Mass of solvent i.e benzene = 120 g = 0.120 Kg                                     (since 1…

Q: The vapor pressure of water at 20.0 ºC is 17.5 torr. At that temperature, what would be the vapor…

A:

Q: An ethylene glycol solution contains 27.8 g of ethylene glycol (CH,O2) in 79.2 mL of water (density…

A:

Q: Potassium hydroxide (KOH) has a lattice energy of −789.0 kJ/mol−789.0 kJ/mol and a heat of hydration…

A: Volume of solution could be heated can be calculated from the energy required for heating and the…

Q: A solution contains 14.6 g of the substance bolognium and 14.6 g of caterium. Assuming ideal…

A:

Q: A 0.2141 g sample of a nonelectrolyte is dissolved in enough water to make 225.0 mL of solution. The…

A: Here, we find the molar mass by the help of the formula of osmotic pressure. In place of…

Q: Concentrated phosphoric acid as sold for use in the laboratory is usually 90% H3PO4 by mass (the…

A: Molarity is defined as the number of moles of solute dissolved in per litre of the solution.  It is…

Q: A solution contains 92.2g of methanol, CH3OH, dissolved in sufficient water to give a  mass of…

A: The molality of a solution is calculated by the formula: Molality m=mol of solutemass of solvent kg

Q: The freezing point of ethanol, CH3CH₂OH, is -117.300 °C at 1 atmosphere. Kf(ethanol) = 1.99 °C/m In…

A:

Q: When 3.14 g of a nonelectrolyte solute is dissolved in water to make 325 mL of solution at 22 °C,…

A: Given ,  Mass of non electrolyte (w) = 3.14 g Volume of solution (V) = 325 mL = 0.325 L Temperature…

Q: A solution contains 0.154 mol NaCl and 0.957 mol H, C. Calculate the vapor pressure of the solution…

A:

Q: Quinine was the first drug widely used to treat malaria. A solution prepared by dissolving 10.0g of…

A: The van’t Hoff factor for the quinine is 1 since it is assumed to be non-electrolyte. The mass of…

Q: How many grams of BaCl2 should be added to 300 g water so that the freezing point of the solution is…

A: Molality is the property of the solution and it is defined as  number of moles of solute  present in…

Q: At 55.0 ∘C∘C, what is the vapor pressure of a solution prepared by dissolving 75.8 g of LiF in 247 g…

A:

Q: Your pure water boils at 100.00 C. You add some sugar into it and now it boils at 101.20C. What is…

A: Given,  Boiling point of pure water, Tb° = 100.00 °C  Boiling point of solution, Tb = 101.20 °C  Kb…

Q: The freezing point of pure benzene is 5.50^o C. A solution is made by dissolving 0.300 g of…

A: The freezing point of a solution can be calculated with the help of the depression in point which…

Q: Lithium iodide has a lattice energy of −7.3 × 102(kJ/mol) and a heat of hydration of −793 kJ/mol.…

A: Given that the lattice energy of lithium iodide is -7.3×102 k J/mol and a heat of hydration of -793…

Q: One gram of sodium hydroxide pellets is dissolved in two hundred-fifty milliliters water. What is…

A:

Q: A 6.06-gram sample of a compound is dissolved in 250. grams of benzene. The freezing point of this…

A: Given: The mass of the unknown compound dissolved in benzene = 6.06 g The mass of benzene = 250 g…

Q: molar mass

A:

Q: 300 ml of 0.05 M ammonia solution, where the density of the solution is 0.88 g/ml.   What is the…

A: The formulas for molarity and molality are: Molarity = Number of moles of soluteVolume of solution…

Q: A solid consists of a mixture of NaNO3 and Mg(NO3)2. When 6.50 g of the solid is dissolved in 50.0 g…

A: Given : Mass of mixture sample i.e solute = 6.50 g Mass of water i.e solvent = 50.0 g = 0.050 Kg…

Q: A student dissolves 20. g of benzoic acid (C,H,0,) in 125. mL of a solvent with a density of 1.07…

A: The mass of benzoic acid, the solute is = 20. g The volume of solvent and solution is = 125. mL The…

Q: The normal boiling point of ethanol, CH3CH2OH, is 78.4 ∘C. When 8.50 g of a soluble nonelectrolyte…

A: Given data:

Q: The vapor pressure of pure water at 95°C is normally 633.9 mmHg, but decreased to 610.1 mmHg upon…

A: This problem can be solve by the following equation: p°-psp°=i×Χsolutep°= Vapor pressure of pure…

Q: A solution of vinegar is 0.763 M acetic acid, HC2H3O2. The density of the vinegar is 1.004 g/mL.…

A: Given data,  molarity of acetic acid, HC2H3O2 = 0.763 M  Density of vinegar = 1.004 g/mL

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.