Liquids And Solids
Ocean County College
Department of Chemistry
Liquids and Solids
Date Submitted: June 21, 2015 Date Performed: June 19, 2015 Lab Section: Chem-181DL1 Course Instructor: Prof. Amal Bassa
Purpose
The purpose of this experiment was to determine the boiling point of isopropyl alcohol and determine the melting point of acetamide.
Procedure
To begin I tied the test tube and thermometer together and inserted an inverted closed-end capillary tube into the test tube. I then filled the test tube with 1 mL of isopropyl alcohol into the test tube. From there, I filled a beaker halfway with water, placing the test tube assembly in it, and then began to heat it. I let the water reach a boil and then removed the heat source. Once the water stopped boiling and bubbles stopped releasing from the bottom from the capillary tube, I recorded the temperature. I then repeated these steps two more times and took the average of the temperatures. The next step was to determine the melting point of acetamide. I crushed the acetamide and filled the capillary tube with 2mm if the powder. I then attached the capillary tube to the thermometer and put it into a beaker that is half filled with water. I then heated the beaker and when the acetamide melted I recorded the temperature.
Observations
Data Table 1: Experiment Results
Boiling Point
Melting Point
Accepted Value
Percent Error
Isopropyl Alcohol
84.3 C
82.4 C
2.31%
Acetamide
79.5 C
81 C
1.85%
Conclusions
My temperatures were a bit off, however I believe that I accomplished what I was initially trying to determine.
References
1. 50-0123-CK-02-Lab Manual.pdf
Questions
A. It is important to know the boiling/melting point of a substance so you can determine if a substance is a pure form or has additional chemicals.
B. Another liquid other than water would have to be used to see a melting point higher than 100 degrees C.
C. There would be no difference, the melting point will still be the same.
D. I may
Department of Chemistry
Liquids and Solids
Date Submitted: June 21, 2015 Date Performed: June 19, 2015 Lab Section: Chem-181DL1 Course Instructor: Prof. Amal Bassa
Purpose
The purpose of this experiment was to determine the boiling point of isopropyl alcohol and determine the melting point of acetamide.
Procedure
To begin I tied the test tube and thermometer together and inserted an inverted closed-end capillary tube into the test tube. I then filled the test tube with 1 mL of isopropyl alcohol into the test tube. From there, I filled a beaker halfway with water, placing the test tube assembly in it, and then began to heat it. I let the water reach a boil and then removed the heat source. Once the water stopped boiling and bubbles stopped releasing from the bottom from the capillary tube, I recorded the temperature. I then repeated these steps two more times and took the average of the temperatures. The next step was to determine the melting point of acetamide. I crushed the acetamide and filled the capillary tube with 2mm if the powder. I then attached the capillary tube to the thermometer and put it into a beaker that is half filled with water. I then heated the beaker and when the acetamide melted I recorded the temperature.
Observations
Data Table 1: Experiment Results
Boiling Point
Melting Point
Accepted Value
Percent Error
Isopropyl Alcohol
84.3 C
82.4 C
2.31%
Acetamide
79.5 C
81 C
1.85%
Conclusions
My temperatures were a bit off, however I believe that I accomplished what I was initially trying to determine.
References
1. 50-0123-CK-02-Lab Manual.pdf
Questions
A. It is important to know the boiling/melting point of a substance so you can determine if a substance is a pure form or has additional chemicals.
B. Another liquid other than water would have to be used to see a melting point higher than 100 degrees C.
C. There would be no difference, the melting point will still be the same.
D. I may
References: 1. 50-0123-CK-02-Lab Manual.pdf Questions A. It is important to know the boiling/melting point of a substance so you can determine if a substance is a pure form or has additional chemicals. B. Another liquid other than water would have to be used to see a melting point higher than 100 degrees C. C. There would be no difference, the melting point will still be the same. D. I may not have logged the temperature at the exact time the acetamide melted and the last bubble escaped.