Homework Answers
Add Answer to:
Chem 1312-1112 LAB VI-Molar Mass by Freezing Point-(Colligative Properties) 1) Would the boiling point of tert-butanol...
4) Tert-butanol is an alcohol. Would the addition of another alcohol as the impurity have affected the freezing poi...
4) Tert-butanol is an alcohol. Would the addition of another alcohol as the impurity have affected the freezing point and boiling point of tert-butanol? a) Yes, because colligative properties depend on the number of impurity particles and NOT on their chemical properties b) No, because colligative properties depend on the chemical properties of the impurity and NOT on the amount of particles c) Only if the same amounts of the alcohol impurity and tert-butanol are mixed
a) Yes b) No c) Depends on the nature of the impurny 2) Would the freezing...
a) Yes b) No c) Depends on the nature of the impurny 2) Would the freezing point of tert-butanol have been depressed more if you had added the same amount of CaF2 as the impurity that you used for the freezing point experiment? (Assuming that CaF2 would dissolve in tert-butanol). a) Yes b) No c) The freezing point would have been higher d) Salts do not have an effect on the freezing point
Colligative properties, determination of the freezing point of a nonelectrolyte, unknown solution. 1. What is the freezi...
Colligative properties, determination of the freezing point of a nonelectrolyte, unknown solution. 1. What is the freezing point depression for the unknown, nonelectrolyte solution? 2. How do you determine the molar mass of the unknown, nonelectrolyte compound for each trial, and what is the average molar mass for the unknown compound? Please help me figure this out? We performed experiment with the solution in a tube suspended in a bath of ice water and mixed solution/observed for freezing. Here is...
Molar Mass by Freezing Point Depression con Pre-Laboratory Assignment I. The following data were obtained in...
Molar Mass by Freezing Point Depression con Pre-Laboratory Assignment I. The following data were obtained in an experiment designed to find the molar mass of a solute by freezing point depressio Solvent: para-dichlorobenzene Freezing point ofpure solvent: 53.02"C Mass of unknown substance: 2.04g Freezing point depression constant: 7.1°C/m Mass of para-dichlorobenzene: 24.80 g Freezing point of solution: 50.78 °C a. Determine the freezing point depression, Δ b. Using Equation 4, calculate the molar mass of the unknown substance. .2.au"-7. ↓...
Determination of Molar Mass by freezing Point depression Not sure how to answer these two questions...
Determination of Molar Mass by freezing Point depression
Not sure how to answer these two questions
Calcium chloride, CaCI_2 is commonly used as road salt. If one mole of CaCI_2 is dissolved in 1 kg v of water, would the freezing point of the solution be greater than, less than, or the same as a solution prepared by dissolving one mole of table sugar (sucrose, C_12H_22O_11) in 1 kg of water? Explain your answer. A student followed our lab procedure...
A Molar Mass from freezing-point Depression. 1. Provide definitions for the following terms: a. Solution-cv b....
A Molar Mass from freezing-point Depression. 1. Provide definitions for the following terms: a. Solution-cv b. Solute c. Solvent d. Colligative property e. Freezing-point depression a. What is the objective of this experiment? b. How will that objective be achieved? 3. A 0.2436-g sample of an unknown substances was dissolved in 20.0 mL of cyclohexane. The density of cyclohexane is 0.779 g/mL. The freezing-point depression was 2.5*C. Calculate the molar mass of the unknown substance. 4. What safety rules must...
Lab 3: Determination of Molar Mass by Freezing Point Depression 1 During winter, several different "salts"...
Lab 3: Determination of Molar Mass by Freezing Point Depression 1 During winter, several different "salts" are used to melt ice sodium chloride (NaCI), a mix of sodium chloride and magnesium chloride (NaCl and MgCla calcium magnesium acetate (CaMg(CHO)). Assume you have 1 mole of each of these in 1 kg of water. Compare the freezing point depressions of these three "salts." a. b. What is the ratio of moles of "salt" to freezing point depression for each? What is...
Colligative Properties: Freezing Point Depression Lauris acid is added to a test tube and heated. The...
Colligative Properties: Freezing Point Depression Lauris acid is added to a test tube and heated. The test tube is placed in water to freeze the lauric acid. After measuring the temperature, an unknown is added. The lauric acid and unknown are heated to a liquid and placed in cold water(Part B). In doing part B of this experiment, Group 1 removes the thermometer and stirring wire to add the unknown, and wipes them off, losing 0.25 g of lauric acid....
Post-Lab Material Experiment 19 Data and Calculations: Molar Mass Determination by Depression of the Freezing Point...
Post-Lab Material Experiment 19 Data and Calculations: Molar Mass Determination by Depression of the Freezing Point 0.3 Name Section A. Measured Freezing Point of Pure Water B. Finding the Freezing Point of a Solution of Liquid Unknown Target mass of solute (Calculated based on the parameters in the instructions) Unknown # Liquid 3.5 Actual mass of solute used Trial Freezing point of solution (observed) -3.0 Mass of solution 116.6 Trial II Freezing point of solution -3.3 Mass of solution 101.3....
Molar mass determination by depression of freezing point lab I'm stuck on calculating the moles of...
Molar mass determination by depression of freezing point lab I'm
stuck on calculating the moles of solute.. How do I calculate it?
Also can u please check if I've done everything else correctly..
The data I collected: Measured freezing point of pure water: 0.0
degrees Celsius Actual mass of solute used: 10.12g Freezing point
of solution (observed): -3.4 Celsius Mass of solution: 84.7g
Freezing point of a Solution of liqud unknown Freezing point depression: Trial #1. 0.0℃ (-3.4°C)= 3.4℃ Molality...
4) Tert-butanol is an alcohol. Would the addition of another alcohol as the impurity have affected the freezing point and boiling point of tert-butanol? a) Yes, because colligative properties depend on the number of impurity particles and NOT on their chemical properties b) No, because colligative properties depend on the chemical properties of the impurity and NOT on the amount of particles c) Only if the same amounts of the alcohol impurity and tert-butanol are mixed
a) Yes b) No c) Depends on the nature of the impurny 2) Would the freezing point of tert-butanol have been depressed more if you had added the same amount of CaF2 as the impurity that you used for the freezing point experiment? (Assuming that CaF2 would dissolve in tert-butanol). a) Yes b) No c) The freezing point would have been higher d) Salts do not have an effect on the freezing point
Molar Mass by Freezing Point Depression con Pre-Laboratory Assignment I. The following data were obtained in an experiment designed to find the molar mass of a solute by freezing point depressio Solvent: para-dichlorobenzene Freezing point ofpure solvent: 53.02"C Mass of unknown substance: 2.04g Freezing point depression constant: 7.1°C/m Mass of para-dichlorobenzene: 24.80 g Freezing point of solution: 50.78 °C a. Determine the freezing point depression, Δ b. Using Equation 4, calculate the molar mass of the unknown substance. .2.au"-7. ↓...
Determination of Molar Mass by freezing Point depression
Not sure how to answer these two questions
Calcium chloride, CaCI_2 is commonly used as road salt. If one mole of CaCI_2 is dissolved in 1 kg v of water, would the freezing point of the solution be greater than, less than, or the same as a solution prepared by dissolving one mole of table sugar (sucrose, C_12H_22O_11) in 1 kg of water? Explain your answer. A student followed our lab procedure...
A Molar Mass from freezing-point Depression. 1. Provide definitions for the following terms: a. Solution-cv b. Solute c. Solvent d. Colligative property e. Freezing-point depression a. What is the objective of this experiment? b. How will that objective be achieved? 3. A 0.2436-g sample of an unknown substances was dissolved in 20.0 mL of cyclohexane. The density of cyclohexane is 0.779 g/mL. The freezing-point depression was 2.5*C. Calculate the molar mass of the unknown substance. 4. What safety rules must...
Lab 3: Determination of Molar Mass by Freezing Point Depression 1 During winter, several different "salts" are used to melt ice sodium chloride (NaCI), a mix of sodium chloride and magnesium chloride (NaCl and MgCla calcium magnesium acetate (CaMg(CHO)). Assume you have 1 mole of each of these in 1 kg of water. Compare the freezing point depressions of these three "salts." a. b. What is the ratio of moles of "salt" to freezing point depression for each? What is...
Post-Lab Material Experiment 19 Data and Calculations: Molar Mass Determination by Depression of the Freezing Point 0.3 Name Section A. Measured Freezing Point of Pure Water B. Finding the Freezing Point of a Solution of Liquid Unknown Target mass of solute (Calculated based on the parameters in the instructions) Unknown # Liquid 3.5 Actual mass of solute used Trial Freezing point of solution (observed) -3.0 Mass of solution 116.6 Trial II Freezing point of solution -3.3 Mass of solution 101.3....
Molar mass determination by depression of freezing point lab I'm
stuck on calculating the moles of solute.. How do I calculate it?
Also can u please check if I've done everything else correctly..
The data I collected: Measured freezing point of pure water: 0.0
degrees Celsius Actual mass of solute used: 10.12g Freezing point
of solution (observed): -3.4 Celsius Mass of solution: 84.7g
Freezing point of a Solution of liqud unknown Freezing point depression: Trial #1. 0.0℃ (-3.4°C)= 3.4℃ Molality...
Most questions answered within 3 hours.
-
Summerdahl Resort's common stock is currently trading at $37 a
share. The stock is expected to...
asked 7 minutes ago -
To an economist, the field of industrial organization answers
which of the following questions?
asked 10 minutes ago -
How could meeting industry expectations, propel managers into
challenging and possible conflict of interest situations? How...
asked 34 minutes ago -
You have been married to your spouse for 10 years. You have two
small children (ages...
asked 2 hours ago -
Spiderman makes a leap from one building to
another. He starts on one building that is...
asked 2 hours ago -
A
symbol is something that stands for something else. What are the
symbols in education?what are...
asked 3 hours ago -
The charge to the left in the figure above has a
magnitude of 2.90 nC, and...
asked 4 hours ago -
Verify the MIRR is 9.29% given cash flows in years 1 and 2 of
$1,000 each,...
asked 5 hours ago -
Calculate the pH of a 5.7 M solution of aniline (C6H5NH2; Kb =
3.8 x 10^-10)
asked 7 hours ago -
LSL R3, R3, R12
Memory
Address
Orig.
Data
Updated
Data
Register
Orig.
Data
Updated
Data
0x84F0...
asked 7 hours ago -
Air at 100 kPa and density of 1.2 kg/m3 flows upward through a
5-cm diameter inclined...
asked 7 hours ago -
Define the following concepts in your own words: (a) stiffness,
(b) strength, (c) strain,
(d) ductility,...
asked 8 hours ago