Lab 9 notes PDF

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Lab notes for Chem Lab...

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Volume of Gas (mL) Pressure (atm) 314

1.00

294

1.068

274

1.146

254

1.236

234

1.342

214

1.467

Boyle's Law 1.6 1.4

Pressure (atm)

1.2 1 0.8 0.6 0.4 0.2 0

0

1

2

3

4

5

6

7

8

Volume (mL)

 

My experiment data verifies Boyle's Law because as the volume changed by decreasing, the pressure changed by increasing. At 75mL, there is a pressure of 1.314 atm.

Volume of Gas (mL) Pressure (atm) 314

1.00

294

1.068

274

1.146

254

1.236

234

1.342

214

1.467

Boyle's Law 1.6 1.4

Pressure (atm)

1.2 1 0.8 0.6 0.4 0.2 0

0

1

2

3

4

5

6

7

8

Volume (mL)

       

My experimental data for butane verifies Boyle's Law because as the volume decreases, the pressure increases. At 120mL, the pressure for the butane gas sample would be 1.00atm. At a pressure of 2.35atm, the volume of glass would exceed the container and pop off. Both of the gases used in the experiment obeyed Boyle's Law. I would expect a sample of pentane to also obey Boyle's Law. I would expect that the plotted pressure vs atm would have a straight line going downwards. When the volume is expanded to 100mL, I would expect that the pressure of the gas would be about 2.03 atm. The bubble wrap inside contains a fixed amount of air and behaves as tiny ballons. when you squeeze the bubble the volume inside the bubble tends to decrease inturn increasing the pressure inside. So when you continue squeezing the bubble the volume continues to decrease and pressure continues to increase until it pops out.

Experiment #1:       

Starting pressure: 1.00 atm Gas volume: 314mL Pressure: 1.00 atm Volume of water in cylinder: 20mL Volume of gas: 314-20= 294 New pressure: 1.146atm +20mL: o Volume: 314-60=254





o Pressure: 1.236atm +20mL: o Volume: 314-80= 234 o Pressure: 1.342atm +20mL: o Volume: 314-100=214 o Pressure: 1.467atm

Experiment #2:    







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Starting pressure: 1.00atm Gas volume: 1.00atm; 314mL Pressure: 1.00atm Cylinder: 20mL o Volume: 314-20=294 o Pressure: 1.068atm +20mL o Volume: 314-40=274 o Pressure: 1.146atm +20mL o Volume: 314-60=254 o Pressure: 1.236atm +20mL o Volume: 314-80=234 o Pressure: 1.342atm +20mL o Volume: 314-100=214 o Pressure: 1.467atm...