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Combined Gas Law
Aileen N. Sambrano
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Robert Boyle
Jacques Charles
Joseph Louis Gay-Lussac
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P1V1
T1
=P2V2
T2
This Formula was the combination of the law of Boyle’s law, Gay-Lussac's law and Charles law. Which means:
P1 = Init ial pressureV1 = Init ial volumeT1 = Init ial temperatureP2 = fi nal pressureV2 = fi nal volumeT2 = fi nal temperature
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Combined Gas law which states that:
The ratio between the pressure-volume product and the temperature of a
system remains constant.
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Combined Gas law which states that:
The ratio between the pressure-volume product and the temperature of a
system remains constant.
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So Let’s Have Some Practice..!!!
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1.A gas measures 100 mL at 27 degree Celsius and 760 mmHg. What will be its volume at 15 degree Celsius and 750 mmHg.??
Answer: ?
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The answer should be :
Formula: P1V1
T1
=P2V2
T2Let’s Derive the formula:
Given: P1 = 760 mmHg V1 = 100 mL T1 =27 degree Celsius + 273 K= 300 KP2 =750mmHgT2 =15 degree Celsius + 273 K= 288 KV2
= ?
Become: P1V1T2 = P2V2 T1
P2T1 P2T1
V2 = P1V1T2
P2T1
V2 =(760mmHg)(100mL)(288K)
(750mmHg)(300K) V2 = 96
mL
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Let’s have some fun.!!
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Answer the following Question and answer it right to get you're prize
Look Under your table
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Answer the following Question
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Word Problem1. If I have 17 liters of gas at a temperature of 67 0C and a pressure of 88.89 atm, what will be the pressure of the gas if I raise the temperature to 94 0C and decrease the volume to 12 liters?
1.P1 = 480 kPa
V1 = 5.00 L T1 = 293
K
P2 = 35 kPaT2 = 308 K
V2 = ??
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Lets answer It. !!
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1. 2 = 72.o8 L
P2 = 135.93 atm
“Word Problem answer”
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Thank you for your
cooperation