Physical Chemistry

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Q. What is the value of R (ideal gas constant) in L·atm/(K·mol)?
  • A. 0.0821
  • B. 8.314
  • C. 62.36
  • D. 0.0831
Q. What is the value of R in the ideal gas equation PV=nRT?
  • A. 0.0821 L·atm/(K·mol)
  • B. 8.314 J/(K·mol)
  • C. 62.36 L·mmHg/(K·mol)
  • D. All of the above
Q. What is the value of the equilibrium constant Kc for the reaction A + B ⇌ C + D at 25°C if the concentrations are [A]=0.1 M, [B]=0.2 M, [C]=0.3 M, [D]=0.4 M?
  • A. 0.5
  • B. 1.0
  • C. 2.0
  • D. 4.0
Q. What is the value of the equilibrium constant Kc for the reaction A + B ⇌ C at 25°C if the concentrations are [A] = 0.1 M, [B] = 0.2 M, and [C] = 0.3 M?
  • A. 0.5
  • B. 1.0
  • C. 1.5
  • D. 2.0
Q. What is the value of the equilibrium constant Kc for the reaction: 2A ⇌ B + C if at equilibrium [A] = 0.5 M, [B] = 0.2 M, and [C] = 0.3 M?
  • A. 0.12
  • B. 0.30
  • C. 0.60
  • D. 1.20
Q. What is the value of the equilibrium constant Kp for the reaction 2NO2(g) ⇌ N2O4(g) at a certain temperature?
  • A. Kp = (P_N2O4) / (P_NO2)^2
  • B. Kp = (P_NO2)^2 / (P_N2O4)
  • C. Kp = (P_N2O4)^2 / (P_NO2)
  • D. Kp = (P_NO2) / (P_N2O4)^2
Q. What is the value of the equilibrium constant Kp for the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g) at 25°C?
  • A. 0.5
  • B. 1.0
  • C. 0.1
  • D. Depends on the initial concentrations
Q. What is the value of the gas constant R in L·atm/(K·mol)?
  • A. 0.0821
  • B. 8.314
  • C. 0.08314
  • D. 1.987
Q. What is the value of the principal quantum number (n) for an electron in the 4f subshell?
  • A. 3
  • B. 4
  • C. 5
  • D. 6
Q. What is the value of the principal quantum number (n) for an electron in the 4s orbital?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the value of the principal quantum number (n) for an electron in the ground state of a hydrogen atom?
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Q. What is the value of the principal quantum number (n) for the outermost electron in potassium (K)?
  • A. 3
  • B. 4
  • C. 5
  • D. 2
Q. What is the value of the principal quantum number (n) for the outermost electrons in a sodium atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the value of the principal quantum number (n) for the outermost electron in a potassium atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the value of the principal quantum number for an electron in the ground state of a hydrogen atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the value of the principal quantum number for the outermost electrons in potassium (K)?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the value of the principal quantum number for the outermost electrons in a sodium atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the value of the universal gas constant R in L·atm/(K·mol)?
  • A. 0.0821
  • B. 8.314
  • C. 62.36
  • D. 1.987
Q. What is the van 't Hoff factor (i) for a strong electrolyte like NaCl in solution?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the van 't Hoff factor (i) for a strong electrolyte that completely dissociates into 3 ions?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the van 't Hoff factor (i) for glucose in solution?
  • A. 1
  • B. 2
  • C. 3
  • D. 0
Q. What is the van 't Hoff factor for a non-electrolyte solute?
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Q. What is the vapor pressure of a solution containing 0.1 mol of a non-volatile solute in 1 kg of water? (Vapor pressure of pure water = 23.76 mmHg)
  • A. 22.88 mmHg
  • B. 21.76 mmHg
  • C. 20.76 mmHg
  • D. 19.76 mmHg
Q. What is the vapor pressure of a solution containing 1 mole of a non-volatile solute in 9 moles of solvent, if the vapor pressure of the pure solvent is 100 mmHg?
  • A. 90 mmHg
  • B. 100 mmHg
  • C. 10 mmHg
  • D. 80 mmHg
Q. What is the vapor pressure of a solution containing 1 mole of a non-volatile solute in 10 moles of solvent, assuming ideal behavior?
  • A. 0.1 P0
  • B. 0.9 P0
  • C. 1.0 P0
  • D. 0.5 P0
Q. What is the vapor pressure of a solution containing 1 mole of a non-volatile solute in 3 moles of solvent, assuming ideal behavior?
  • A. 0.25 P0
  • B. 0.75 P0
  • C. 1.0 P0
  • D. 0.5 P0
Q. What is the vapor pressure of a solution containing 1 mole of non-volatile solute in 3 moles of solvent if the vapor pressure of the pure solvent is 100 mmHg?
  • A. 75 mmHg
  • B. 100 mmHg
  • C. 25 mmHg
  • D. 50 mmHg
Q. What is the vapor pressure of a solution containing 1 mole of solute in 3 moles of solvent, assuming ideal behavior?
  • A. 0.25 P0
  • B. 0.75 P0
  • C. 0.5 P0
  • D. P0
Q. What is the vapor pressure of a solution containing a non-volatile solute compared to the pure solvent?
  • A. Higher than the pure solvent
  • B. Lower than the pure solvent
  • C. Equal to the pure solvent
  • D. Unpredictable
Q. What is the volume occupied by 1 mole of an ideal gas at STP (Standard Temperature and Pressure)?
  • A. 22.4 L
  • B. 24.0 L
  • C. 18.0 L
  • D. 20.0 L
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