Combined Gas Law
Boyle’s Law:
Charles’s Law:
P 1 V1 = P 2V2
P1 V1=P2V2
V1 = V2
T1 T2
P1 = P2
Amonton’s Law: T1 T2
T1 T2
P 1 V 1 = P 2V 2
T1 T2
STANDARD TEMPERATURE AND PRESSURE
standard set of
conditions for
experimental
measurement to
enable computations
between sets of data
 investigated the
relationship between
pressure and
temperature in gases

T: 273 K
P: 760 mmHg
- International Union Of
Pure And Applied
Chemistry (IUPAC)
STANDARD TEMPERATURE AND PRESSURE
T = OºC (273 K)
 P = 1 atm (760 mm Hg)

SAMPLE PROBLEM #1:
A
12.01 L sample of air is at STP. What would be its
volume if its pressure is decreased to 500 mm Hg
and its temperature is doubled?
SAMPLE PROBLEM #2:
A
200 L container at STP was crushed thereby
reducing its size to one-fourth its volume and
increasing its pressure to 5.00 atm. How hot is air
in the container in ºC
Seat Work
 Practice Exercises (1-3)
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