Investigating the Effect of Temperature on the Volume of a Gas
Aim: To investigate the effect of temperature on the volume of a gas,
given that the pressure acting on the gas is fixed.
Hypothesis: According to CharlesÂ’s Law, the volume of a given amount
of gas is directly proportional to the absolute temperature when the
pressure is constant. Thus, it is expected that as the temperature of
the gas increases, its volume will increase also at a constant rate.
When the temperature is increased, the particles in the gas gain more
kinetic energy and as a result, the particles move faster and quicker
and thus, the particles bombard each other more frequently. Because of
this, the pressure exerted by the gas on its surroundings increase,
creating an increase in the volume of the gas.
Variables:
* Input(Independent): Temperature T/°C
* Output(dependent): length of air column, L/cm
* Controlled Variables: pressure and mass of gas inside capillary
tube.
Materials Needed:
Clamp Stand
Beaker 500ml
Distilled water
Bunsen burner
30 cm ruler
Concentrated Sulfuric acid
Glass tube
Syringe needle
Thermometer
Method:
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* Heat the end of the glass tube so as to close it. The tubeÂ’s end
will melt and close. Make sure the end is blocked very well.
* Using a syringe needle, inject approximately 1cm³ of Sulfuric acid
into the blocked glass tube. Refer to the diagram.
* Inject the Sulfuric acid gradually, creating an air column as
shown in the above diagram.
* Be careful, Sulfuric acid is a dangerous dehydrating agent that
will burn your skin.
* Measure the diameter of the glass tubeÂ’s opening.
* Once this is done, set up the clamp stand and beaker as shown in
Compress the safety bulb, hold it firmly against the end of the pipette. Then release the bulb and allow it to draw the liquid into the pipette.
5.) One at a time, place your test tubes in the water bath and heat the first test tube to 25 , the second to 50 , the third to 75, and the last to 100 degrees c. Remeber to stir with your stirring rod every so often.
The metal cylinder was removed from the boiling water and placed in the Styrofoam cup using tongs.
2. Drop a gummy bear into each of your prepared beaker or cup and place the beaker or cup
This lab was designed so that we, the students, could learn how to determine the molar volume of a gas effectively.
Planning Firstly here is a list of equipment I used. Boiling tubes Weighing scales Knife Paper towels 100% solution 0% solution (distilled water) measuring beakers potato chips Cork borer. We planned to start our experiment by doing some preliminary work. We planned to set up our experiment in the following way.
projected its rays through the tinted glass... But in the western or black chamber the effect of the
heat will stay in the cup and can only escape by rising to the surface
The air in between the layers of glass should be thick and dense, so that it can save energy. One of the most common airs used in-between glass is argon. When argon is used heat loss is reduced. You could also use carbon dioxide or sulfur hexa-fluoride between glass.
Quickly and carefully transfer the heated metal from the test tube to the water in the calorimeter.
Measuring cylinder to measure small amounts of fluids. Pipette to gather small amounts of fluids. Test tube holder to hold test tubes. 2. Molar Salt solutions to submerge potato chips in.
Now, assemble and arrange all of the needed supplies so that they are easily accessible. Connect the IV tubing to the solution bag and allow the fluid in the bag to run through the entire length of the tubing, also known as priming the tubing. When this is done, clamp the tubing closed. You will then need to tear several pieces of tape, six to eight inche...
Investigating Heat Loss From a Container Planning We are investigating heat loss from a container and how it is affected. We could change: Room temperature Surface area Amount of water Use a lid Insulate around it Colour of tin We could measure / observe: Amount of time Temperature We will change: Surface area We will measure / observe: Temperature (every minute for 5 minutes) Our question is: Does surface area effect the rate of heat loss? We will keep these the same: Colour of tin Room temperature Amount of water Use a lid Insulate around it Preliminary investigation = == ==
2. In the large beaker, put water and boil it completely. After that, remove the beaker from heat. 3. Sample tubes (A-D) should be labeled and capped tightly.
- After each trial, leave equipment for 2 minutes to cool. After this when moving hot test tubes and beakers, use the heat proof gloves provided to prevent burning skin