Temperature And Temperature Experiment

839 Words 4 Pages
Introduction:

There is a direct relationship between temperature and pressure in gases. The relationship can be proven by measuring pressure, which is measured with a pressure sensor, and temperature, which is measured with a temperature probe. Two areas remain constant throughout this experiment, which are volume of the gas and the number of molecules the gas itself contains. In this experiment, using the constructed apparatus, an Erlenmeyer flask with an air sample will be placed in four different water baths, which vary in temperature. Following this, a mathematical relationship between pressure and absolute temperature of a gas can be determined. This data will be used to determine the type of mathematical relationship between pressure
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Temperature probe and gas pressure sensor prepared. Both connected to labquest and set up for new data collection. Rubber stopper assembly obtained and connected to plastic tubing and valves.

Connector attached at free end of tubing to the gas pressure sensor with a clockwise turn. Two-way valve left open. Rubber-stopper assembly inserted tightly into the 125 mL Erlenmeyer flask. Closed the two way valve so it was perpendicular with valve stem.

Mode changed to selected events on labquest. Graph settings changed to display pressure vs. temperature graph, measurements recorded in kPa (for pressure) and degrees Celsius (for temperature).

Flask placed and entirely covered in ice-water bath. Readings stabilized and stored. Ice-water bath is dumped. Beaker filled with cold tap water. Readings taken again.

Used temperature probe to measure hot-water bath. Used beaker tongs to remove beaker from the hot plate between 50 and 60 degrees Celsius. Readings taken again. Used beaker tongs to place beaker back on hot plate and heated between 80 and 90 degrees Celsius.

Flask placed into boiling-water bath and readings were taken. Removed flask and temperature probe and stopped data collection.

Results:

Pressure (kPa) Temperature (oC) Temperature (K) Constant, K (P/T or P*T)
Ice-bath 92.63 1.8 274.95
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Experimenter error took place in small actions, such as spilling water from baths and improperly using the rubber stopper assembly valves. These actions are avoidable, and despite their significance, they do not indicate a failed experiment. Instrumental error also may have occurred as the labquest screen was not calibrated properly and made it difficult to use throughout the experiment to measure and record data. This error was unavoidable, however, this still does not indicate a failed

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