Chemistry semester 1 exam

IDEAL GAS LAW

Pressure-Volume-Temp-Moles

PV=nRT
atmospheres (atm)

pressure relative to that of sea level (sea level set a 1 atm)

Gas laws vs. kinetic thoery

summerize observed behaivor or relationships

 

do not tell why relationships exist

 

expalains behaivor of an ideal gas

mmHg (aka Torr)

 

pressure bases on height of a column of mercury
pressure, Force, area 
pressure= force/area
1 atm=?

760 torr

760mmHg

101.32 kPa

14.69 psi

ideal gas constant (R)

0.08206 L(atm)/mol(k)

 

8.314 L(kPa)/mol(k)

STP

standard temeprature and pressure for gases

temp= 273.15 k

pressure= 1 atm

V=22.4 L

combined gas law

P1V1/n1T1=P2V2/n2T2

Dalton’s law of partial pressure

;

PT=P1+ P2 + P3

x

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