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Boyles law lab report
Action Research B, Part II (EDU T211K4)
Harvard University
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Kamaj Stovall 2/4/
Boyle’s Law Lab Report
Purpose: Using Boyle’s law, explore the relationship between pressure and the volume of a gas. Question: What is the effect of pressure on the volume of a gas? Hypothesis: If a pressure of a gas is increased, then its volume will decrease because the gas molecules will be pushed closer together. Variables: Because the volume depends on the pressure in this experiment, volume will be the dependent variable and pressure will be the independent variable. The constants will be temperature and the number of moles because throughout this lab those will remain the same. Materials: 60 mL syringe with cap, silicone lubricant, ring stand, ruler, burette clamp, book, balance, and four 1 kg weights. Procedure: ● Step 1: Gather Materials. ● Step 2: Measure the Area of the top of the Syringe. i. Using the ruler, measure the diameter of the top of the syringe. Divide the diameter by 2, then take the answer of that and square it. Then multiply that by π. ● Step 3: Prepare the Syringe System. i. Take the cap off of the syringe and slide the plunger out from the top. To keep the experiment as accurate as possible, add a few drops of silicone lubricant into the syringe. Put the plunger back and make sure it is lined up with the 50 mL mark. Also put the cap back on. Then, move the syringe to the ring stand and use the burette clamp to secure it. ● Step 4: Measure the Mass of the Book. i. Make sure the balance is cleared, then measure the mass of the book to the nearest gram. Convert grams to kilograms to make it easier to find future values, then record it. ● Sub-Steps for Steps 5-9: i. Place the correct amount of weight on the syringe to apply additional pressure to the gas.
ii. After the plunger has slid down, total the mass on the syringe record this value on the correct row of the data table. iii. Calculate the pressure using the formula, P = 1 (mass on syringe / area of top of syringe). iv. Measure the volume of the gas in the syringe and measure to the nearest 0 mL. v. Find the product of the pressure and the volume. Make sure to record all found values into the data table. ● Step 5: Measure Pressure and Volume with the Weight of the Book. ● Step 6: Measure Pressure and Volume with the Book and 1 kg of Weight. ● Step 7: Measure Pressure and Volume with the Book and 2 kg of Weight. ● Step 8: Measure Pressure and Volume with the Book and 3 kg of Weight. ● Step 9: Measure Pressure and Volume with the Book and 4 kg of Weight. Data: Circular Top of the Syringe Diameter (cm) Radius (cm) Area (cm 2 )
3 cm 1 cm 10 cm 2
Mass on Syringe (kg)
Pressure (kg/cm 2 )
Volume (mL)
P•V
No Book or Weight
0 1 50 51.
Book Only 0 1 47 51.
Book + 1kg of Weight
1 1 43 51.
Book + 2kg of Weight
2 1 40 51.
Book + 3kg of Weight
3 1 37 51.
Boyles law lab report
Course: Action Research B, Part II (EDU T211K4)
University: Harvard University
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