When 40.0 grams of an unknown compound are dissolved in 500. grams of benzene, the freezing point of the resulting solution is 3.77°C. The freezing point of pure benzene is 5.48 °C, and the Kf for benzene is 5.12°C/m.  What is the molecular weight of the unknown compound?

Q: At 0 oC, the solubility of sodium acetate in water is 36.1 g per 100 g of water and at 40 oC, the…

A: Saturated solution - if  maximum amount of solute is dissolved in perticular solvent at perticular…

Q: A solution is made by dissolving 6.60 grams of MgCl2 in 380.0 mL of water. What is the freezing…

A: Given, Mass of MgCl2 = 6.60 g  Volume of water = 380.0 mL  Density of water = 1.00 g/mL  Kf of water…

Q: What is the molality of a solution made by dissolving 47.6 grams of Cr(NO 3) 3 in 795 grams of…

A: Given :-  Mass of Cr(NO3)3 = 47.6 g  Mass of water = 795 g Or 0.795 kg To calculate :-  Molality of…

Q: An aqueous solution of Potassium sulfate (K2SO4) has a concentration of 38.14% v/v. What mass in kg…

A: Given:  % v/v of K2SO4=38.14%Volume of solution=340 mLDensity of K2SO4=2.66 g/mL To find: Mass of…

Q: Prepare a solution of NaCl by accurately weighing approximately 1.45g of NaCl into a 100 mL beaker /…

A: Molality (m)=Moles of soluteMass of solvent in kg mol/kg Mass of NaCl added=1.45gMolar mass of…

Q: A 250. mL aqueous solution prepared by dissolving 55.0 g of a non-electrolyte solute had a freezing…

A: Depression in freezing point describes that the freezing point of a liquid (a solvent) is epressed…

Q: The osmotic pressure of an aqueous solution at 309 K is 120 kPa. Calculate the freezing point of the…

A: For aqueous solution , freezing point is given as :  Freezing point of solution = Freezing point of…

Q: The solubility of NaCl in water at 0ᵒC is 35.7 g per 100 mL of water. A solution containing 406.8 g…

A: The chemical substance which is able to dissolve itself in a solvent and form a solution is called…

Q: Calculate the freezing point of a solution containing 0.745 kg of CHCI3 and 58.0 g of eucalyptol…

A:

Q: particular solvent has a freezing point depression constant of 4.16(deg. C/m), what is the molality…

A: Freezing point of solvent is greater than freezing point of solutions

Q: A solution prepared by dissolving 18 g sucrose (CH1206) in 90 g water. Calculate the boiling point…

A: Given that: Mass of Sucrose = 18g Mass of water = 90g Kb for water = 0.51°C.kg/mol Molar mass of…

Q: Calculate the freezing point of a solution that contains 68.0 g of sucrose (C12H22O11) in 90. g of…

A:

Q: calculate the freezing point of an aqueous solution with 412 g of sucrose (C12H22O11) per kilogram…

A: The depression of freezing point is a colligative property which depends upon the concentration of…

Q: What is the molality of a solution made by dissolving 23.9 grams of LiI in 260 grams of water?…

A:

Q: What is the molality of a solution when 12 g of NH 3 (17.031 g/mol) is dissolved in 250 g water?…

A:

Q: The solubility of NaCl in water at 0ᵒC is 35.7 g per 100 mL of water. A solution containing 406.8 g…

A: Solubility is defined as the ability of a solute to dissolve in a solvent to form a solution.  Given…

Q: Calculate the freezing point of a glass of water of volume 250cm3 sweetened with 7.5g of sucrose

A: A question based on mole concept that is to be accomplished.

Q: Calculate the molality of a solution prepared by dissolving 13.7 g of sodium hydroxide (NaOH) in…

A: The molality of a solution is calculated by the formula, m=msMs×mS×1000......(1) Where, ms is the…

Q: How many liters of the antifreeze ethylene glycol [CH2(OH)CH2(OH)] would you add to a car radiator…

A: According to the equation for depression in freezing point  △Tf = Kf × wGMW×Wkg where w = Wt of…

Q: What is the molality of a solution made by dissolving 19.9 grams of NH 4Br in 910 grams of water?…

A: Given mass of NH4Br = 19.9 g  Given mass of H2O = 910 g  Here , solute is NH4Br and solvent is H2O.…

Q: What is the molality of a solution prepared by dissolving 18.5 g of sodium nitrate (MW=84.99g/mol)…

A:

Q: Which solution has the lowest freezing point?  A. Pure water B. 1.5 m CaCl2 C. 2.0 m Sucrose…

A: Depression in Freezing Point = i  x  Kf x m i=> van't Hoff factor kf => Molal depression…

Q: An aqueous solution of a nonelectrolyte is made by dissolving the solute in 1 L of water. The…

A: ∆Tf=Kf×m use this formula to get the answer

Q: At 0 oC, the solubility of sodium acetate in water is 36.1 g per 100 g of water and at 40 oC, the…

A: Solubility is defined as the amount of solute in gram present in 100 mL of the solvent or solution.…

Q: In a coffee-cup calorimeter experiment, 10.00 g of a soluble ionic compound was added to the…

A: Determine the heat gained by the water.

Q: Calculate the freezing temperature of a solution where 144 grams of C6H12O6 were dissolved in 1500 g…

A: The substances of solid and liquid states are at a particular temperature and at atmospheric…

Q: Calculate the percent mass of solute in each of the following solutions. A. 2.14g of potassium…

A: percent by mass is given by formula percent mass = mass of solutemass of solution × 100   Mass of…

Q: Vitamin C packet is added to a glass of water containing 770.0 mL of water. The Vitamin C packet…

A: Mass of vitamin C = 1000 mg = 1gm Volume of water = 770 ml  Density of water = 1.00 g/ml Weight of…

Q: An aqueous zinc bromide solution (ZnBr2) boils at 100.250 °C.  What is the molality of this…

A: Given  The Boiling point of Aqueous solution ZnBr2  = 100.250 ℃  Kb  of water   = 0.512 ℃/m…

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

A:

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:

Q: Which property of a pure solvent will increase in the presence of dissolved solute particles? Which…

A: Colligative Properties  are those properties which depends upon the Number of solute particles and…

Q: The solubility of some unknown chemical at 82 degrees is 305.9g/104.4g H2O. How much of this…

A: Solubility of unknown Chemical = 305.9 g/ 104.4 gAmount of water taken = 207.5 gAmount dissoved in…

Q: A solution contains 68.4 g of sucrose (C12H22O11) dissolved in 250 g of water. What is the molality…

A: Given, Mass of sucrose = 68.4 gram Moles of sucrose = Given MassMolar MassMolar mass = 342.3…

Q: A pure solvent has a freezing point of −3.62°C. A solute is added to the solvent and the solution…

A: Molality is a measure of the number of moles of solute present in 1 kg of solvent. Unit of molality…

Q: MOLARITY AND MOLALITY Calculate the molarity concentration of a solution that contains 49.5 g of…

A: Given: Volume of solution = 460 mL = 0.46 L Mass of Ca3(PO4)2 = 49.5 g Molar mass of Ca3(PO4)2,…

Q: How many milliliters of each component are present in 805 mL of this solution?

A: %v/v = {volume of solute(mL)/volume of solution(mL)} × 100  Solute = isopropyl alcohol  Volume of…

Q: Calculating the freezing point of an aqueous solution 3. What is the freezing point of an aqueous…

A: When a salt (which completely dissociates) is added to water it lowers the freezing point of the…

Q: What is the freezing point of a ethanol solution if that same solution boils at 79.5 ℃? The normal…

A: Freezing point depression and boiling point elevation are colligative properties. Freezing point…

Q: A solution is made by dissolving 6.60 grams of MgCl2 in 380.0 mL of water. What is the freezing…

A: To find freezing point of a solution.

Q: Isopropyl alcohol is mixed with water to produce a 33.0% (v/v) alcohol solution. How many…

A: The total volume % of the alcohol solution = 100% The volume % of isopropyl alcohol present in the…

Q: student mixes 20.0 g of a salt in 100.0 g of water at 20°C and obtains a homogeneous solution.…

A: Option d. KNO3 because it is unsaturated.

Q: 0.9% (w/v) sodium chloride (MW = 58.44 g/mol) solution (normal saline solution) has an osmotic…

A:

Q: solution is made using 158.4 mL of methanol (density 0.792 g/mL) and 300.0 mL of water (density…

A: The concentration of any substance can be expressed in different ways such as molality, molarity,…

Q: Directions: True or False: Write the word "HEAT" if the statement is CORRECT or “COOL" if the…

A: Correct and incorrect statements are given in the following step.

Q: How much KBr could dissolve in 50 g of H2O at 70ºC?       Which solute is LEAST soluble in water…

A: From the graph solubility of KBr at 70°C in 100g of water=90 g

Q: The freezing point of CCl4 was lowered by 0.52 K when 50 grams of a chemical were added to the…

A: Before the question solution we overlook on the basic concept of freezing point and Depression in…

Q: What is the molality of a solution made by dissolving 26.3 grams of CsCl in 420 grams of water?…

A:

Q: Calculate the freezing point of a solution containing 50.0 g of NaCl in 5000 mL water . K for water…

A: Given in the question, Volume of water = 5000 mL Mass of NaCl = 50.0 g Kf for water = 1.86 C°/m. As…

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.