molar volume. molar volume what is the volume of a gas at stp, if it contains 10.4 moles? what is...
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molar volume • What is the volume of a gas at STP, if it
contains 10.4 moles?
• What is the volume of carbon dioxide gas (STP) if the mass is 400 grams?
• What is the mass of 500 liters of oxygen at STP?
H2 + O2 H2O• How many liters of oxygen are required when
making 180 grams of water.• BCA table is required. O2 to H2O
•ONE MORE EQUATION
Ideal Gas Equation
Charles’ law: V T(at constant n and P)
Avogadro’s law: V n(at constant P and T)
Boyle’s law: V (at constant n and T)1P
V nT
P
V = constant x = RnT
P
nT
PR is the gas constant
PV = nRT
The conditions 0 0C and 1 atm are called standard temperature and pressure (STP).
PV = nRT
R = PVnT
=(1 atm)(22.414L)
(1 mol)(273.15 K)
R = 0.0821 L • atm / (mol • K)
Experiments show that at STP, 1 mole of an ideal gas occupies 22.414 L.
pressure must be in atmospheres (atm)
The conditions 0 0C and 1 atm are called standard temperature and pressure (STP).
PV = nRT
R = PVnT
=(760 mmHg)(22.4L)
(1 mol)(273 K)
Experiments show that at STP, 1 mole of an ideal gas occupies 22.414 L.
pressure must be in: mm Hg
What is the volume (in liters) occupied by 49.8 g of HCl at STP?
PV = nRT
V = nRTP
T = 0 0C = 273 K
P = 1 atm
n = 49.8 g x 1 mol HCl36.5 g HCl
= 1.37 mol
V =1 atm
1.37 mol x 0.0821 x 273 KL•atmmol•K
V = 30.6 L
EXPANDING ON PV = nRT
• Determining the GRAMS of a gas (not at STP) when given the VOLUME
• Determining the VOLUME of a gas (not at STP) when given the GRAMS
What is the number of grams of oxygen in the following?
• P = 1.5 atm
• V = 24.0 L
• T = 10oC
• n = ?
• R = 0.0821 L atm
mol K
• n (# of moles) is the unknown.
• Then convert to grams
How many liters of carbon dioxide are in the following condition?
• P = 740 mm Hg• T = 30oC• 440 grams
• Convert grams to moles
• then use the IDEAL GAS LAW
• R = 0.0821 L atm
mol K
Aluminum combines with oxygen to form Aluminum oxide. How many liters of oxygen are
formed with 270 grams of aluminum at a pressure of 1 atm and a temperature of 10oC?
molar volume • What is the volume of a gas at STP, if it
contains 10.4 moles?
• What is the volume of carbon dioxide gas (STP) if the mass is 400 grams?
• What is the mass of 500 liters of oxygen at STP?
H2 + O2 H2O• How many liters of oxygen are required when
making 180 grams of water.• BCA table is required. O2 to H2O
•ONE MORE EQUATION
Ideal Gas Equation
Charles’ law: V T(at constant n and P)
Avogadro’s law: V n(at constant P and T)
Boyle’s law: V (at constant n and T)1P
V nT
P
V = constant x = RnT
P
nT
PR is the gas constant
The conditions 0 0C and 1 atm are called standard temperature and pressure (STP).
PV = nRT
R = PVnT
=(1 atm)(22.414L)
(1 mol)(273.15 K)
R = 0.0821 L • atm / (mol • K)
Experiments show that at STP, 1 mole of an ideal gas occupies 22.414 L.
pressure must be in atmospheres (atm)
What is the volume (in liters) occupied by 49.8 g of HCl at STP?
PV = nRT
V = nRTP
T = 0 0C = 273 K
P = 1 atm
n = 49.8 g x 1 mol HCl36.5 g HCl
= 1.37 mol
V =____ atm
_____ mol x 0.0821 x ____ KL•atmmol•K
V =________
What is the number of grams of oxygen in the following?
• P = 1.5 atm
• V = 24.0 L
• T = 10oC
• n = ?
• R = 0.0821 L atm
mol K• n (# of moles) is the
unknown.• Then convert to grams
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