chem paper
Conclusion
The purpose of this experiment was to find the boiling point of an unknown solution in order to find its identity from the chart of substances. Also the unknown substance was compared to distilled water on viscosity and on surface tension. The unknown solution letter was D and 25 ml were obtained in a 50 ml graduated cylinder. We also obtained 25 ml of distilled water in a 50 ml graduated cylinder. The unknown solution’s viscosity and surface tension were compared to those of the distilled water, and the unknown solution scored lower in both categories compared to distilled water. The initial temperature of the unknown solution was 22.2 degrees Celsius. The boiling point of the unknown solution in the first trial was 82.3 C; second trial was 80.3 C and third was 84 C. These boiling points could not be exact measurements because the measurements were not completely accurate to one another, and the solution is not 100% pure. Isopropyl alcohol is the unknown according to the results. The percentage yield of the experiment was 102.34% and the percent error was .06. Boiling point is the temperature in which the vapor pressure of a liquid becomes equal to atmospheric pressure; this is the reaction that Isopropyl alcohol had in this experiment. The most volatile solution is pentane because it has a higher vapor pressure of 525.0 mmHg and the lowest volatile solution is Isopropyl alcohol because it has the lowest vapor pressure. Acetone has the lowest boiling point. Isopropyl alcohol started splashing before the water started boiling and this is the reason to conclude Isopropyl was the unknown
The purpose of this experiment was to find the boiling point of an unknown solution in order to find its identity from the chart of substances. Also the unknown substance was compared to distilled water on viscosity and on surface tension. The unknown solution letter was D and 25 ml were obtained in a 50 ml graduated cylinder. We also obtained 25 ml of distilled water in a 50 ml graduated cylinder. The unknown solution’s viscosity and surface tension were compared to those of the distilled water, and the unknown solution scored lower in both categories compared to distilled water. The initial temperature of the unknown solution was 22.2 degrees Celsius. The boiling point of the unknown solution in the first trial was 82.3 C; second trial was 80.3 C and third was 84 C. These boiling points could not be exact measurements because the measurements were not completely accurate to one another, and the solution is not 100% pure. Isopropyl alcohol is the unknown according to the results. The percentage yield of the experiment was 102.34% and the percent error was .06. Boiling point is the temperature in which the vapor pressure of a liquid becomes equal to atmospheric pressure; this is the reaction that Isopropyl alcohol had in this experiment. The most volatile solution is pentane because it has a higher vapor pressure of 525.0 mmHg and the lowest volatile solution is Isopropyl alcohol because it has the lowest vapor pressure. Acetone has the lowest boiling point. Isopropyl alcohol started splashing before the water started boiling and this is the reason to conclude Isopropyl was the unknown