Chapter 11 Flashcards
Boyles law
P1 + v1 = P2 + v2
Charles’s Law
V1 = V2
_ _
T1 T2
Gay-Lussac’s Law
P1 P2
_ = _
T1 T2
The combined gas law
(P1)(V1) (P1)(V2)
______ = ______
T1 T2
Avogadro’s Law
V1 V2
__ = __
n1 n2
At STP, 1 mol of gas equals ____?
22.4L
Celcius to Kelvin
+273
Kelvin to celcius
-273
1 atm = ___mmHg
760
The Ideal Gas Law
PV = nRT
R is called _________ and is equivalent to _______?
Ideal gas constant; 0.0821 L x atm/mol x K
Daltons Law
Ptotal = P1 + P2 + P3 + …
When the pressure is increased on a gas, its volume decreases.
Boyle’s Law
When the temperature is increased on a gas, its volume increases
Charles Law
When the temperature is increased on a gas, its pressure increases
Gay-Lussac’s Law
A single law that relates the changes in pressure, volume, and temperature of a gas
The Combined Gas Law
Direct relationship between the volume of a gas and the number of moles of gas.
Avogadro’s Law
The relationship between the 4 properties used in the measurement of a gas
Ideal Gas Law
In a gas mixture, the total pressure is given by the amount of partial pressures of each component
Daltons law
The pressure that a gas in a mixture of gases would exert if it were present alone under the same conditions.
Partial pressure
What volume (L) of Cl2 gas at 1.2 atm and 27 C is needed to completely react with 1.50g of aluminum ?
2 Al (s) + 3 Cl2 (g) ---> 2 AlCl3 (s)
v = 2L
What volume (L) of O2 gas is needed to completely react with 15.0g of aluminum at STP?
4 Al (s) + 3 O2 (g) -----> 2 Al2O3 (s)
9.34 LO2
What is the molar mass, in grams per mole, of an unknown gas in a 1.50-L container, if 0.488g of the gas has a pressure of 0.075 atm at 19 C?
109 g/mol
What is the temperature (in C) of a sample of 3.00 moles of He at 27.5 atm of pressure and in a 6.00 L container?
397 Celcius
Methane, CH4, can be used as fuel for an automobile; however, it is a gas at normal temperatures and pressures, which causes some problems with storage. One gallon of gasoline could be replaced by 655g of CH4. What is the volume of this much methane at 25 C and 745mmHg.
1018 L
How many grams of He are present in 8.00 L of gas at STP?
1.43g He (g)
What is the volume at STP of 4.00g of CH4?
5.59 LCH4
A weather balloon with a volume of 44L is filled with 2.0 mol of helium. What is the final volume, in liters, if helium is added to give a total of 5.0 mol of helium, if the pressure and temperature do not change?
V2 = 110 L
A 25.0 mL bubble is released from a divers air tank at a pressure of 4.00atm and a temperature of 11 C. What is the volume, in milliliters, of the bubble when it reaches the ocean surface where the pressure is 1.00atm and the temperature is 18 C?
160mL
Suppose an oxygen tank has a pressure of 120 atm at a room temperature of 25 C. If a fire in the room causes the temperature of the gas inside the oxygen tank to reach 402 C, what is its pressure, in atmospheres, if the volume and amount of gas do not change/ The oxygen tank may rupture if the pressure inside exceeds 180 atm. Would you expect it to rupture?
1929.6 = P2
A sample of helium gas has a volume of 5.40L and a temperature of 15 C. What is the final volume, in liters, of the gas after the temperature has been increased to 42 C when the pressure and amount of gas do not change?
V2 = 42 C
When Louisa had her asthma attack, she was given oxygen through a face mask. the gauge on a 12-L tank of compressed oxygen reads 3800 mmHg. How many liters would this same gas occupy at a final pressure of 570 mmHg when temperature and amount of gas do not change?
- L
