#1
Which gas law describes the relationship between pressure and volume of a gas?
Boyle's Law
ExplanationIn Boyle's Law, the pressure and volume of a gas are inversely proportional, meaning as one increases, the other decreases.
#2
According to the kinetic theory of gases, which of the following is true?
Gas particles have negligible volume
ExplanationThe kinetic theory states that gas particles are considered point masses with negligible volume compared to the space they occupy.
#3
What is the SI unit of pressure?
Pascal (Pa)
ExplanationThe SI unit of pressure is the Pascal (Pa), named after Blaise Pascal, and is equivalent to one Newton per square meter.
#4
What is the mathematical relationship between pressure and volume in Boyle's Law?
P ∝ 1/V
ExplanationThe mathematical relationship in Boyle's Law is expressed as P ∝ 1/V, indicating that pressure is inversely proportional to volume.
#5
At constant temperature and pressure, what happens to the volume of a gas if its number of moles is doubled?
The volume doubles
ExplanationAccording to Avogadro's Law, at constant temperature and pressure, the volume of a gas is directly proportional to its number of moles.
#6
According to Charles's Law, if the temperature of a gas is doubled while keeping the pressure constant, what happens to its volume?
It doubles
ExplanationCharles's Law states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature.
#7
What is the standard temperature and pressure (STP) in the context of gas laws?
0°C and 1 atm
ExplanationSTP is defined as 0°C temperature and 1 atmosphere pressure, commonly used as a reference point in gas law calculations.
#8
Which gas law describes the relationship between the pressure and temperature of a gas, while keeping volume constant?
Gay-Lussac's Law
ExplanationGay-Lussac's Law states that the pressure of a gas is directly proportional to its absolute temperature when volume is held constant.
#9
Which gas law can be derived from Boyle's Law, Charles's Law, and Gay-Lussac's Law?
Combined Gas Law
ExplanationThe Combined Gas Law combines Boyle's, Charles's, and Gay-Lussac's Laws into a single equation describing the relationship between pressure, volume, and temperature.
#10
What is the ideal gas law equation?
PV = nRT
ExplanationThe ideal gas law equation, PV = nRT, describes the relationship between pressure (P), volume (V), number of moles (n), gas constant (R), and temperature (T) for an ideal gas.
#11
What is the total pressure of a mixture of gases according to Dalton's Law of Partial Pressures?
The sum of the pressures exerted by each individual gas
ExplanationDalton's Law states that in a mixture of gases, the total pressure is the sum of the partial pressures exerted by each gas.
#12
What does the van der Waals equation correct for in the ideal gas law?
Attractions between gas particles
ExplanationThe van der Waals equation corrects for the ideal gas law's assumptions by considering attractions between gas particles and adjusting for their finite volumes.
#13
Which of the following statements about the root mean square speed of gas molecules is correct?
It is directly proportional to the temperature of the gas
ExplanationThe root mean square speed of gas molecules is directly proportional to the square root of their temperature, according to kinetic theory.
#14
What is the significance of the Boltzmann constant (k) in kinetic theory?
It relates the energy of gas particles to temperature
ExplanationThe Boltzmann constant relates the average kinetic energy of gas particles to the temperature of the gas in kinetic theory.