# The boiling point experiment

One person could measure water and salt, and help record, The boiling point experiment the other recorded results. Place the pan on a stove.

The risks involved in this experiment include: Do not use a mercury thermometer as mercury is toxic! The highest temperature reading was recorded.

The only improvement that I feel could have further improved my experiment is by: If I boil water, sugar and salt solution which one will have the highest boiling point? Continue till the water boils and temperature remains steady for some time.

Tools Transparent kitchen vacuum container, kettle, digital barometer.

After conducting the experiment, the results obtained showed that salt does affect the boiling point of water.

After one 1 minute record the temperature. Check temperature of water every 30 seconds. Water was 30 degree Celsius, and sugar solution was 34 degree Celsius. The boiling point is generally dependent on the ambient air pressure — the graph in Figure 1 shows this dependence for water.

This result matched the hypothesis. In a narrow range of pressures, however, a linear approximation is used. Data for the graph was taken from the web site The Engineering ToolBox. Using the ring stand and the clamp, suspend the thermometer in the water be sure the thermometer is secure, and is not touching the beaker.

Thus with decreasing pressure the boiling point decreases and vice versa; it is clear that the dependence is not linear. Make sure that the beaker is safe to heat e. To prevent this, any spillages should be wiped up immediately with a paper towel.

But the salt solution has the highest boiling point. That temperature is the boiling point of water. As well as the boiling water spitting out of the pot. Then turn on the stove and start the stop watch. This would make the experiment a lot easier to perform, whilst also spreading the workload which could result in more accurate measurement readings.

Include location, elevation, air pressure, and boiling point. The trend indicated was the more salt that was added, the higher the increase in the temperature of the boiling point. But be sure to comment it thoroughly. If more heat is added the liquid will change to gas water vapor.

However there were still a few sources of error, although they did not significantly affect the results. Do not touch it, etc.

After switching off the kettle we wait until the boiling stops and then pour the water into the vacuum container to a half of its height. During the experiment, it is necessary to follow the safety rules when working with hot water.

Video 1 We now know that by pumping the air out of the vacuum container we take away the air and therefore the pressure decreases Second part: Take one third of water in a pan.In my data, at 1 minute the salt solution had the highest, it was 36 degree Celsius.

Water was 30 degree Celsius, and sugar solution was 34 degree Celsius. At minute all solution had reached its boiling point.

You can see the temperature variation on the left side menu, at a particular temperature the water starts boiling and this constant temperature is the boiling point. Click on the ‘Reset’ button to redo the experiment.

Experiment 1: Simple Distillation and Boiling Points- Separation of Liquids February 24, Analysis In this experiment, the distillation of three groups of two miscible liquids was performed.

First, Ethanol and 2-Propanol were distilled. The boiling points of ethanol and 2-propanol had a difference of 5°C. The percent recovery for both ethanol and 2. wheret b is the boiling point in degrees Celsius and p is the pressure in kilopascals.

In our experiment, however, we focus only on a qualitative investigation. In the local newspaper look up and record the barometric air pressure on the day you carried out the experiment and record it. VII. SCORE BOARD Create a table like the one below and record your data.

Include location, elevation, air pressure, and boiling point. After conducting the experiment, the results obtained showed that salt does affect the boiling point of water.

The general trend indicated through the results of the experiment was, the more salt that was added, the more the boiling point increased.

The boiling point experiment
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