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PRE-LAB EXERCISE Imagine that 5.000×10² g of lauric acid is used as a solvent to dissolve 0.050 mol toluic acid and 0.050 mol benzoic acid. The freezing point depression constant (kf) for lauric acid is 3.90°C kg mol-¹. Quantify the freezing point depression (AT) in units of °C for the mixture. Write this complete answer in your lab notebook before the lab period begins then ask the TA to grade this at the beginning of the lab period.

PRE-LAB EXERCISE Imagine that 5.000×10² g of lauric acid is used as a solvent to dissolve 0.050 mol toluic acid and 0.050 mol benzoic acid. The freezing point depression constant (kf) for lauric acid is 3.90°C kg mol-¹. Quantify the freezing point depression (AT) in units of °C for the mixture. Write this complete answer in your lab notebook before the lab period begins then ask the TA to grade this at the beginning of the lab period.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Help me solve this prelab question plz
Student 12:49 PM Fri Feb 10 < 88 05.Freezing PtDepression Computer 15 05.Freezing PtDepression MATERIALS computer Vernier computer interface Logger Pro B X T PRE-LAB EXERCISE Imagine that 5.000×10² g of lauric acid is used as a solvent to dissolve 0.050 mol toluic acid and 0.050 mol benzoic acid. The freezing point depression constant (kf) for lauric acid is 3.90°C kg mol-¹. Quantify the freezing point depression (AT) in units of °C for the mixture. Write this complete answer in your lab notebook before the lab period begins then ask the TA to grade this at the beginning of the lab period. 05.Boiling PtElevationLab Temperature Probe (check this out from stockroom) 400 mL beaker utility clamp 18 x 150 mm test tube lauric acid benzoic acid ring stand PROCEDURE 1. Obtain and wear goggles. Connect the Temperature Probe to the computer interface. Prepare the computer for data collection by opening the file "15 Freezing Pt Depression" from the Chemistry with Vernier folder. Part I Freezing Temperature of Pure Lauric Acid +
Transcribed Image Text:Student 12:49 PM Fri Feb 10 < 88 05.Freezing PtDepression Computer 15 05.Freezing PtDepression MATERIALS computer Vernier computer interface Logger Pro B X T PRE-LAB EXERCISE Imagine that 5.000×10² g of lauric acid is used as a solvent to dissolve 0.050 mol toluic acid and 0.050 mol benzoic acid. The freezing point depression constant (kf) for lauric acid is 3.90°C kg mol-¹. Quantify the freezing point depression (AT) in units of °C for the mixture. Write this complete answer in your lab notebook before the lab period begins then ask the TA to grade this at the beginning of the lab period. 05.Boiling PtElevationLab Temperature Probe (check this out from stockroom) 400 mL beaker utility clamp 18 x 150 mm test tube lauric acid benzoic acid ring stand PROCEDURE 1. Obtain and wear goggles. Connect the Temperature Probe to the computer interface. Prepare the computer for data collection by opening the file "15 Freezing Pt Depression" from the Chemistry with Vernier folder. Part I Freezing Temperature of Pure Lauric Acid +
Expert Solution
Step 1

Explanation

The freezing point depression given as

 ΔTf = kf m.................................(i)

where, m is molality, and kf is freezing point depression constant

and molality is calculated as, m = (moles of solute, n) / mass of solvent in Kg

hence from m and Kf, the ΔTf for lauric can be calculated

 

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