Question: 76 Q. Generate a Cooling curve by plotting temperature vs time data on a single graph. Plot on graphing paper or use a computer program

computer program and print plot. 4. Freezing point of pure acetic acid

76 Q. Generate a Cooling curve by plotting temperature vs time data on a single graph. Plot on graphing paper or use a computer program and print plot. 4. Freezing point of pure acetic acid solvent (from graph), C 5. Freezing point of acetic acid solution (from graph), C 6. Determine the freezing point depression of the acetic acid solution, C ATs paresowent - ATf Pure solution 7. Determine the mass of acetic acid, kg 8. Determine the molar mass of the unknown, g/mol K (acetic acid) = 3.90 C.kg/mol 9. Identity of unknown sample (from Unknown Table on page 18) 10. Calculate the percent error in molar mass for the experiment. Rearranging equation 4 for the molar mass yields MM of solute (eq. 5) K,* g of solute kg of solvent X AT IN THIS EXPERIMENT You will determine the freezing points of pure acetic acid solvent and a solution of unknown solid mixed in acetic acid. Then you will calculate the molar mass to identify the unknown sample used. The possible unknown samples are one of the following: UNKNOWNS Name Formula Hazard Molar mass (g/mol) Benzoic acid 122.12 Citric acid 192.12 Malonic acid 104.06 Maleic acid 116.07 Salicylic acid 138.12 Acetylsalicylic 180.157 acid CH(COOH) Health hazard corrosive (COOH)CH (OH)C(COOH)CH (COOH) Irritant harmful HO0CNCH,(COOH) Corrosive irritant harmful (HOOCCHCH(COOH) Irritant harmful CH(COOH) Corrosive irritant harmful (HCOOCH(COOH) Irritant harmful B. Determination of the Freezing Point of Glacial Acetic Acid +15mL Mass of test tube and flaska Gece c Mass of test tube flask and acetic acid 125.199 190.519 C. Determination of the Freezing Point of an unknown/Acetic Acid Solution Unknown number . 753 Mass of weighing paper 9 Mass of weighing paper and unknown sample, 9 1.189 1.949 Cooling Curve for Pure Acetic Acid Time (min) Temp CC) Temp (C) Temp (C) if necessary -O Sol Cooling Curve for Unknown Solution Time (min) Temp (C) Temp (C) Temp CC if necess 00 26.1C 25.0C 0.5 26.9C 26.0C 1.0 24.2C 22.1C 1.5 16.1C 15.0C 2.0 13.2C 14.0C 25 3.9C 15.0C 3.0 14.9C 14.0C 3.5 14.9C 14.0C 40 4.5C 14C 4.5 14.5C 14.0C 5.0 14.5C 14.0C 5.5 14.0C 4.0C 6.0 (4.0C 14.0C 6.5 14.0C 14.0C 7.0 14.0C 14.0C 14.0C 14.0C 14.0C 13.9C 8.5 13.9C 13.9C 9.0 (8.8C 13.9C 9.5 (3.5C 13.5C 10.0 134.0C 13.5C 10.5 136.0C 13.1C 11.0 13.0C 13.1C 11.5 13.0C 13.0C 12.0 73.0C 13.0C 0.0 22,6C 29.0C 0.5 17.30 28.0C 1.0 16C 21.3C 1.5 16C 17.3C 2.0 16C 15.9C 2.5 16C 15.9C 3.0 16C 15.9C 3.5 16C 15.9C 4.0 16C 15.9C 4.5 L16C 15.9C 5.0 16.900 (5.9C 5.5 (5.9C 15.9C 6.0 15.9C 75.9C 6.5 75.9C 15.80 7.0 15.90 15.8C 7.5 15.9C 15.9C 8.0 15.9C 15.5C 8.5 15.9C 15.2C 9.0 15.4C 15.2C 9.5 15.7C 15.0C 10.0 15.1C 15.0C 10.5 15.1C 15.0C 11.0 15.1C 19.9C 11.5 S.1C 14.9C 12.0 15.0C 14.9C ololololololo 7.5 8.0

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Chemistry Questions!

1. Read the article \"How to Display Data Badly,\" by Howard Wainer listed above. It was published in the American Statistician in 1984, volume 38, pages 137-147. It is a quick, informative, and...

PHYS 103 LAB REPORT: KINEMATICS ASSIGNMENT INSTRUCTIONS OVERVIEW Laboratory reports are an essential component of a physics education. INSTRUCTIONS Download this document and record the results for...

Experiment 3 Acceleration Due To Gravity Questions How do you compute an object's velocity from its position? How do you measure the acceleration of a mass as it falls under the influence of gravity?...

(Lab 1) Regression Analysis - Graphing Exercises Part 2 Of 2 (16pts) Experiment 1 A researcher follows the rate of a reaction by measuring the volume of H 2 gas generated over time from a reaction...

Rate Determination and Activation Energy An important part of the kinetic analysis of a chemical reactionis to determine the activation energy, E a .Activation energy can be defined as the energy...

8. Disconnect a wire from the circuit and begin timing simultaneously. Record the voltage Note: Use the conversion factor 1 p. = 10" F. at 10 second intervals in Data Table 1 as the capacitor...

A discrete sequence {xn} can be converted into a continuous representation x(t) = ts X n= (t n ts) xn, where ts is the sampling period. (a) State two characteristic properties of Dirac's function. [2...

1. Calculate the sample size needed given these factors: one-tailed t-test with two independent groups of equal size small effect size (see Piasta, S.B., & Justice, L.M., 2010) alpha =.05 beta = .2...

Python and most Python libraries are free to download or use, though many users use Python through a paid service. Paid services help IT organizations manage the risks associated with the use of...

Write each of the following as an equation. Then solve: 20. The sum of five times a number, and 16, is equal to seven times the number. Find the number. 21. Twice the difference of a number and 10 is...

Current Attempt in Progress As at December 31, 2020, Kendrick Corporation is having its financial statements audited for the first time ever. The auditor has found the following items that might have...

What do we mean by the six-month forward exchange rate?

For each of the statements below, select all the ones that are true. The range and codomain of a function may be the same set The range and codomain of an invertible function are always the same set...

Construction Issue: Staff are resistant to trying new things, reluctant to change.

5. Individual: Work with principal for refinement of implementation.

Tools (look fors and walkthroughs): Make sure that you have developed look fors with your staff about what it looks like and sounds like when the strategy is implemented. Then use these look fors on...