Gas Laws
Q. What is the effect of increasing the number of moles of a gas on its pressure at constant volume and temperature?
A.
Pressure decreases
B.
Pressure increases
C.
Pressure remains constant
D.
Pressure becomes zero
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Solution
According to the ideal gas law, increasing the number of moles (n) of a gas while keeping volume (V) and temperature (T) constant will increase the pressure (P).
Correct Answer: B — Pressure increases
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Q. What is the effect of increasing the number of moles of gas in a closed container at constant temperature and volume?
A.
Pressure decreases
B.
Pressure increases
C.
Volume decreases
D.
Temperature increases
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Solution
According to Avogadro's Law, increasing the number of moles of gas increases the pressure if temperature and volume are constant.
Correct Answer: B — Pressure increases
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Q. What is the effect of increasing the number of moles of gas in a closed container at constant temperature?
A.
Pressure decreases
B.
Pressure increases
C.
Volume decreases
D.
Temperature decreases
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Solution
According to Avogadro's Law, increasing the number of moles of gas increases the pressure if the volume is constant.
Correct Answer: B — Pressure increases
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Q. What is the effect of increasing the number of moles of gas on pressure at constant volume and temperature?
A.
Pressure decreases
B.
Pressure increases
C.
Pressure remains constant
D.
Pressure becomes zero
Show solution
Solution
According to the ideal gas law, increasing the number of moles of gas at constant volume and temperature will increase the pressure.
Correct Answer: B — Pressure increases
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Q. What is the effect of increasing the number of moles of gas on the pressure at constant volume and temperature?
A.
Pressure decreases
B.
Pressure increases
C.
Pressure remains constant
D.
Volume increases
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Solution
According to Avogadro's Law, increasing the number of moles of gas at constant volume and temperature will increase the pressure.
Correct Answer: B — Pressure increases
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Q. What is the effect of increasing the number of moles of gas on the pressure, assuming volume and temperature are constant?
A.
Pressure decreases
B.
Pressure increases
C.
Pressure remains constant
D.
Pressure becomes zero
Show solution
Solution
According to Avogadro's Law, increasing the number of moles of gas increases the pressure if volume and temperature are constant.
Correct Answer: B — Pressure increases
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Q. What is the ideal gas equation?
A.
PV = nRT
B.
PV = nRT^2
C.
PV = nR/T
D.
PV = nRT^3
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Solution
The ideal gas equation is PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
Correct Answer: A — PV = nRT
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Q. What is the relationship between pressure and volume in Boyle's Law?
A.
P ∝ V
B.
PV = constant
C.
P + V = constant
D.
P/V = constant
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Solution
Boyle's Law states that the pressure of a gas is inversely proportional to its volume at constant temperature, which can be expressed as PV = constant.
Correct Answer: B — PV = constant
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Q. What is the relationship between pressure and volume of a gas at constant temperature according to Boyle's Law?
A.
P ∝ V
B.
PV = constant
C.
P + V = constant
D.
PV = nRT
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Solution
Boyle's Law states that the pressure of a gas is inversely proportional to its volume at constant temperature, which can be expressed as PV = constant.
Correct Answer: B — PV = constant
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Q. What is the relationship between pressure and volume of a gas at constant temperature?
A.
Directly proportional
B.
Inversely proportional
C.
Independent
D.
Exponential
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Solution
According to Boyle's Law, pressure and volume of a gas are inversely proportional at constant temperature.
Correct Answer: B — Inversely proportional
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Q. What is the value of R (universal gas constant) in L·atm/(K·mol)?
A.
0.0821
B.
8.314
C.
62.36
D.
1.987
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Solution
The value of R in L·atm/(K·mol) is 0.0821.
Correct Answer: A — 0.0821
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Q. What is the value of R in the ideal gas law in L·atm/(K·mol)?
A.
0.0821
B.
8.314
C.
0.0831
D.
8.31
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Solution
The value of the ideal gas constant R in L·atm/(K·mol) is 0.0821.
Correct Answer: A — 0.0821
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Q. What is the value of R in the Ideal Gas Law in terms of L·kPa/(K·mol)?
A.
0.0821
B.
8.314
C.
0.08314
D.
8.31
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Solution
The value of R in L·kPa/(K·mol) is 8.314.
Correct Answer: A — 0.0821
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Q. Which gas law combines Boyle's and Charles's laws?
A.
Avogadro's Law
B.
Ideal Gas Law
C.
Dalton's Law
D.
Graham's Law
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Solution
The ideal gas law combines Boyle's and Charles's laws, relating pressure, volume, and temperature of an ideal gas.
Correct Answer: B — Ideal Gas Law
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Q. Which gas law describes the relationship between pressure, volume, and temperature?
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Ideal Gas Law
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Solution
The Ideal Gas Law describes the relationship between pressure, volume, and temperature of a gas.
Correct Answer: D — Ideal Gas Law
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Q. Which gas law relates the pressure, volume, and temperature of a gas?
A.
Boyle's Law
B.
Charles's Law
C.
Ideal Gas Law
D.
Avogadro's Law
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Solution
The Ideal Gas Law (PV = nRT) relates pressure, volume, and temperature of an ideal gas.
Correct Answer: C — Ideal Gas Law
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Q. Which gas law relates the pressure, volume, and temperature of an ideal gas?
A.
Boyle's Law
B.
Charles's Law
C.
Ideal Gas Law
D.
Avogadro's Law
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Solution
The Ideal Gas Law (PV = nRT) relates pressure, volume, and temperature of an ideal gas.
Correct Answer: C — Ideal Gas Law
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Q. Which gas law states that the volume of a gas is directly proportional to its temperature at constant pressure?
A.
Boyle's Law
B.
Charles's Law
C.
Gay-Lussac's Law
D.
Avogadro's Law
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Solution
Charles's Law states that the volume of a gas is directly proportional to its temperature at constant pressure.
Correct Answer: B — Charles's Law
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Q. Which gas law states that the volume of a gas is directly proportional to the number of moles at constant temperature and pressure?
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Graham's Law
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Solution
Avogadro's Law states that the volume of a gas is directly proportional to the number of moles at constant temperature and pressure.
Correct Answer: C — Avogadro's Law
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Q. Which of the following is NOT a gas law?
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Newton's Law
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Solution
Newton's Law is not a gas law; it pertains to motion and forces.
Correct Answer: D — Newton's Law
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Q. Which of the following statements is true about real gases compared to ideal gases?
A.
Real gases obey gas laws perfectly
B.
Real gases have no intermolecular forces
C.
Real gases occupy no volume
D.
Real gases deviate from ideal behavior at high pressure
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Solution
Real gases deviate from ideal behavior at high pressures and low temperatures due to intermolecular forces and finite volume.
Correct Answer: D — Real gases deviate from ideal behavior at high pressure
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Q. Which of the following statements is true about the behavior of real gases?
A.
They obey gas laws perfectly
B.
They have no volume
C.
They experience intermolecular forces
D.
They are always ideal
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Solution
Real gases experience intermolecular forces and do not behave ideally under all conditions.
Correct Answer: C — They experience intermolecular forces
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Q. Which of the following statements is true about the kinetic molecular theory of gases?
A.
Gas particles have significant volume
B.
Gas particles attract each other
C.
Gas particles are in constant random motion
D.
Gas particles do not collide
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Solution
The kinetic molecular theory states that gas particles are in constant random motion.
Correct Answer: C — Gas particles are in constant random motion
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