mass of test tube + beaker + stir bar + solvent (g) 30.64 mass of test tube + beaker + stir bar + solvent + solute (g) 38.48 mass of test tube + beaker + stir bar (g) 10.23 mass of solvent (g) (A) 20.41 mass of solute (g) (B) 7.84 freezing point pure solvent (°C) 45.36 freezing point solution (°C) 41.56 If the freezing point depression constant of the pure solvent is 8.68 °C-kg solvent/mol solute, calculate the molar mass of the solute g/mol
Q: Use the temperature and atmospheric pressure data to identify which of the following bodies of water…
A:
Q: Calculate the freezing point of a solution prepared by mixing 125 g of sucrose (C12H22O11) (MW =…
A:
Q: A certain liquid x has a normal freezing point of o °c and a freezing point depression constant…
A: Given: Normal freezing point = 0.0 oC Freezing point of solution = -1.1 oC mass of solvent = 650 g =…
Q: N/A 13. Mass of test tube, beaker and cyclohexane N/A 14. Mass of test tube and beaker 16.4379 g 15.…
A: 20. freezing point depression = [ 6.21 - 4.86 ] = 1.35 0C Average freezing point depression…
Q: A. Freezing Point of Cyclohexane (Solvent) 1. Mass of beaker, test tube (g) 85.364g 2. Freezing…
A: 1. Mass of beaker + test tube = 85.364 g2. Freezing point from cooling curve = 5.68°C1. Mass of…
Q: An organic chemistry student prepared 110. mL of a cyclohexane-ethanol solution at 24.0 °C by…
A: The volume of solute in milliliter present in 100 mL solution is known as the volume percent…
Q: II. Freezing point of a pure solid. Data Table. 1. mass of pure naphthalene o l seode os 9.579g…
A: Mass of pure napthalene = M = 9.579 g = 9.579 * 10-3 kgFreezing Point of napthalene = TN = 78.6…
Q: A certain liquid X has a normal boiling point of 114.40 °C and a boiling point elevation constant K…
A: The boiling point of the pure liquid = 114.40 0C. The boiling point of the solution = 115.1 0C.…
Q: solute in the mixture. unight of heavy molecule. Pure insulin, n was measured at
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: acid solution containing 572g of sulfuric acid per liter of solution has a density of 1.33g/mL.…
A: As per our guidelines, I can answer only first three sub-parts. Molarity = number of moles of solute…
Q: A solution of NaNO3 contains 120 grams of solute dissolved in 100 grams of water. At 50°C this…
A: From the graph , Solubility of NaNO3 at 50°C = 113 g/100 g water (less than 120 g) If the amount…
Q: Benzoic acid (C6H5COOH) Find the following with the given data: Freezing point of lauric acid…
A: Given: Mass of lauric acid = 80 g Mass of unknown = 10 g = 0.01 Kg Kf of lauric acid = 3.9°C/m
Q: How many grams of a hypothetical salt X2Y1 of molar mass 75.00 g/mol would need to be added to…
A:
Q: A solution is prepared by combining 4.82 grams of an unknown non-electrolyte with 305.0 grams of…
A: Given that: Mass of solute = 4.82 g Mass of chloroform = 305.0 g = 0.305 kg Freezing point of the…
Q: What is the mole fraction of acetone (C3H6O. MW-58.08 g/mol) in the gas phase resulting from a…
A: In this question, we will determine the mole fraction of acetone in gas phase from the liquid phase…
Q: An automobile antifreeze mixture is made by mixing equal volumes of ethylene glycol (SG= 1.114; MW =…
A: Since you have posted multiple sub-parts, the answer for first three sub-parts are given below.…
Q: Consider a solution of the solute CHCI3 in the solvent CHBR3. If the molality of the solution is…
A: Dipression in freezing point (∆Tf) for any solution is directly proportional to the molality (m) of…
Q: Needed is 900 cc of 1/3 (v/v) alcohol in water. How many cc of each component are needed to prepare…
A: Concentration of solution = 1/3 (v/v) Volume of solution = 900 cc We need to find volume of each…
Q: What is the molality in mol/kg of a solution if the temperature difference ΔT between the solvent…
A: Depression in freezing Point . The freezing point of a solution is less than the freezing point of…
Q: solution made by dissolving methyl salicylate, C7H6O2, in benzene, C6H6 had a freezing point of…
A:
Q: Based on the following data, determine the molecular weight of the unknown solute. Note the "initial…
A: The given problem can be solved by using the formula as; ∆Tf=Kf m…
Q: Sove for the (F) freezing point of urea and (G) Percent Error. Given: A. Weight of urea = 2g B.…
A: The depression in freezing point used to calculate is, ∆Tf=-Kfm∆Tf→freezing point depresssion…
Q: The normal boiling point of a certain liquid X is 113.00°C, but when 0.26kg of barium hydroxide…
A:
Q: A solution of table sugar in water contains 5.25% by mass sucrose. Calculate 1. the mass of sucrose…
A: Since we only answer up to 3 sub-parts, we will answer the first 3. Please resubmit the question and…
Q: SOLVENT BOILING POINT Kb FREEZING POINT Kr Water 100.00 °C 0.52 °C/m 0.000 °C 1.86 °C/m Benzene…
A: The freezing point depression equation is represented as follows,
Q: 3. Determine the molecular weight of the unknown from the following data collected from a freezing…
A: Freezing Point of p-xylene = 12.1oC = Tx Freezing Point of p-xylene + unknown = Ts = 9.6oC…
Q: 1. ASSERTION: The solubility of gases in water follows the order O2 < N2 < SO2 < CO2 < NH3. REASON:…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: The normal freezing point of a certain liquid X is -2.6°C, but when 59. g of urea ((NH2)2CO) are…
A:
Q: molarity of glucose
A: Hi, Since you have posted multiple questions, we are entitled to solve first question only. If, you…
Q: Sodium chloride, the table salt (NaCl) is added in cooking to enhance the flavor of the food. When…
A:
Q: In the technique of recrystallization, one step involves heating the solvent containing the solute…
A: Solution -
Q: Complete the following table for aqueous solutions of caffeine, C8H10O2N4.
A: NOTE: “Since you have posted a question with multiple sub-parts, we will solve first three subparts…
Q: A 0.194-g sample of a nonvolatile solid solute dissolves in 9.82 g of cyclohexane. The change in the…
A: Depression in freezing point is a colligative property and is given as follows,
Q: Answer the following problem completely and systematically. Show your complete solution. As you may…
A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…
Q: How many grams of a hypothetical salt X4Y5 of molar mass 54.00 g/mol would need to be added to…
A: Given : Freezing point of solution = -19.8 oC mass of water i.e solvent = 514 g = 0.514 Kg…
Q: How many grams of a hypothetical salt X4Y3 of molar mass 95.00 g/mol would need to be added to…
A: Given, Molar mass of salt is 95 g/mol Mass of water 414 g. Let the mass of salt be w grams. The…
Q: Test Tube Solute Mass of Deionized Water (g) Mass of solute (g) Freezing Point (C) 1 None 4.140g X…
A: In test tube 2 the solute is NaCl In test tube 3 the solute is Unknown A
Q: You have a container of 17.42 M conc. acetic acid (CH3COOH(aq)) with density 1.05 g/mL, find the…
A: Observing the given question it is clear that for given volume 150mL molality has to be calculated.…
Q: The normal boiling point of a certain liquid X is 110.00°C, but when 26.1g of iron(III) nitrate…
A: Boiling-point elevation describes the phenomenon that the boiling point of a liquid will be higher…
Q: Molality is defined as the number of moles of solute per kilogram of solvent. If the concentration…
A: Molality = Number of moles of solute/Mass of solvent in kg Mass = Volume × density Number of moles =…
Q: Freezing Point Depression: Molar Mass of a So Report Sheet Unknown solid number 942g 0.1949 2.94°C…
A: A numerical problem based on mole concept that is to be accomplished.
Q: Table 10.4 (data) B. Freezing-Point Depression Sodium Chloride Solute Ethylene Glycol Solute…
A: For sodium chloride solute,
Q: Find the freezing point (Tr) and boiling point (Tb) of a solution containing 4.0g sucrose…
A: Given : Weight of sucrose = 4.0 gm Weight of water = 500 gm
Q: 9. Engr. Tabor was given 0.6216 g of an unidentified solute. To identify the molecular weight of the…
A: Given: mass of solute = 0.6216 g volume of solvent (carbon tetrachloride) = 78.03 mL Boiling point…
Q: The solubility of sodium acetate at 20 °C is 46.5 g per 100 grams water. When 50.0 grams of sodium…
A: The solubility of sodium acetate at 20 °C is 46.5 g per 100 grams water. When 50.0 grams of sodium…
Q: Calculate freezing temperature Tf and the boiling temperature Tb of a solution formed by mixing…
A:
Q: D. Freezing Point Calculation Directions: Study the sample problem and do the task given. Task to do…
A:
Q: d on the following data, determine the molecular weight of the unknown solute. Note the "initial…
A: Since your question has multiple sub-parts, we will answer the first three sub-parts for you. If you…
Q: The normal boiling point of a certain liquid X is 109.50°C, but when 44.2g of benzamide (C7H7NO) are…
A: The question is based on the concept of solution. elevation in boiling point is a colligative…
Assume van't Hoff factor is 1.00
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- In the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 deg C. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 deg C. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kgIn the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 deg C. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 deg C. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kg What is the value for delta Tb or the change in boiling temperature (in degrees Celsius)?In the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 deg C. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 deg C. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kg What is the value for delta Tb or the change in boiling temperature (in degrees Celsius)? Final answer must be rounded off to 2 decimal places, and shall NOT have any unit.
- In the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 deg C. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 deg C. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kg - What is the value for delta Tb or the change in boiling temperature (in degrees Celsius)? Final answer must be rounded off to 2 decimal places, and shall NOT have any unit. - How many moles of solute is present in the solution given in the video? Final answer must be rounded off to 2 decimal places, and shall NOT have any units. - What is the molal concentration of the solution? Final answer must be rounded off to 2 decimal places, and shall NOT…The solvent for an organic reaction is prepared by mixing 70.0 mL of acetone (C3H6OC3H6O) with 56.0 mL of ethyl acetate (C4H8O2C4H8O2). This mixture is stored at 25.0 ∘C∘C. The vapor pressure and the densities for the two pure components at 25.0 ∘C∘C are given in the following table. What is the vapor pressure of the stored mixture? Compound Vapor pressure(mmHg) Density(g/mLg/mL) acetone 230.0 0.791 ethyl acetate 95.38 0.900Iron(II) chloride (melting point 677 °C) and potassium chloride (melting point 776 °C) form the compounds KFeCl3 and K2FeCl4 at elevated temperatures. KFeCl3 melts congruently at 399 °C and K2FeCl4 melts incongruently at 380 °C. Eutectics are formed with compositions x = 0.38 (melting point 351 °C) and x = 0.54 (melting point 393 °C), where x is the mole fraction of FeCl2. The KCl solubility curve intersects the A curve at x = 0.34. Sketch the phase diagram. State the phases that are in equilibrium when a mixture of composition x = 0.36 is cooled from 400 °C to 300 °C.
- Since the melting point of ice is 0⁰C and its melting enthalpy is 6.010 kJ/mol, calculate the freezing point depression of water at 95 bars and 450 bars. (Assume that the densities of water in liquid and solid state are 0.997 g/ and 0.917 g/cm3 and remain constant.)In the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 degC. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 degC. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kg. How many moles of solute is present in the solution? Final answer must be rounded off to 2 decimal places, and shall NOT have any units.In the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 degC. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 degC. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kg. 1. How many moles of solute is present in the solution 2. What is the value for delta Tb or the change in boiling temperature (in degrees Celsius)? 3. What is the molal concentration of the solution?
- In the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 degC. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 degC. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kg. How many moles of solute is present in the solution? Molality of the solution?In the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 degC. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 degC. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kg What is the molal concentration of the solution?In the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 degC. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 degC. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kg What is the molal concentration of the solution? Final answer must be rounded off to 2 decimal places, and shall NOT have any unit.