Chemistry 11
What is the value of the gas constant ?
0.0821 L*atm/mol*K
R =
0.0821 atmL/molK
In the reaction 2H2(g) + O2(g) = 2H2O(g), the volume ratio of H2 to H2O is
1 : 1
kPa
101.3
Pa
101300
psi
14.7
In the equation H2(g) + CI2(g) = 2HCI(g), one volume of hydrogen yields how many volumes of hydrogen chloride ?
2
The standard molar volume of a gas at STP is all of te following except
22.4 g.
C3H4
40
mmHg
760
torr
760
K =
C + 273
Volume of gaseous reactants and products in a chemical reaction can be expressed as ratios of small whole numbers
Constant temperature and pressure are maintained
The two samples must have equal masses. True or False ?
False
For the expression V = nRT/P, which of the following choices will cause the volume to increase ?
Increase T
Which is common unit for the ideal gas constant R ?
L*atm/mol*K
Amount
N=p*v/r*t
At constant temperature and pressure, gas volume is directly proportional to the
Number of moles of gas
Pressure
P = n*r*t/v
All of the following equations are statements of the ideal gas law except
P = nRTV
Ideal Gas Law
PV=nRT
Temperature
T=p*v/n*r
The two flasks must contain an equal number of molecules. True or False ?
True
Volume
V = n*r*t/p
At constant temperature ad pressure, the volumes of gaseous reactants and products can be expressed
as ratios of small whole numbers
The volume of a gas is directly proportional to the number of moles of that gas if
both the pressure and temperature remain constant
According to Avogrado's law, 1 L of H2(g) and L of O2(g) at the same temperature and pressure
contain equal numbers of molecules
Avogrado's Law
equal volumes of gases at the same temperature and pressure contain equal numbers of molecules
The law to combining volumes applies only to gas volumes
measured at constant temperature only to gas volume
R=
p*v/n*t
N =
p*v/r*t
In the expression V = kn, n represents
the number of moles of gas
Avogrado's principle led to the realization that the molecules of some substances
were made of more than one atom
