Physical Chemistry

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Q. What is the principal quantum number (n) for the outermost electron in rubidium (Rb)?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the principal quantum number for the outermost electron in a sodium atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the principal quantum number for the outermost electron in potassium (K)?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
Q. What is the principal quantum number for the outermost electrons in a chlorine atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the principal quantum number for the outermost electrons in a potassium atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the principal quantum number for the outermost electrons in a sodium atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the principal quantum number for the outermost electrons in potassium (K)?
  • A. 3
  • B. 4
  • C. 5
  • D. 2
Q. What is the principal quantum number of the outermost electrons in a chlorine atom?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
Q. What is the principle behind quantum mechanics in chemistry?
  • A. Particles have wave-like properties
  • B. Energy is quantized
  • C. Both A and B
  • D. None of the above
Q. What is the purpose of a salt bridge in a galvanic cell?
  • A. To connect the electrodes
  • B. To maintain charge balance
  • C. To increase voltage
  • D. To decrease resistance
Q. What is the purpose of a salt bridge in an electrochemical cell?
  • A. To connect electrodes
  • B. To maintain charge balance
  • C. To increase voltage
  • D. To decrease resistance
Q. What is the rate constant (k) for a first-order reaction with a half-life of 10 minutes?
  • A. 0.0693 min^-1
  • B. 0.1 min^-1
  • C. 0.693 min^-1
  • D. 0.5 min^-1
Q. What is the rate law for a reaction that is first order with respect to A and second order with respect to B?
  • A. Rate = k[A][B]
  • B. Rate = k[A]^1[B]^2
  • C. Rate = k[A]^2[B]^1
  • D. Rate = k[A]^2[B]^2
Q. What is the rate law for a reaction that is second order in A and first order in B?
  • A. Rate = k[A]^2[B]
  • B. Rate = k[A][B]^2
  • C. Rate = k[A][B]
  • D. Rate = k[A]^2 + k[B]
Q. What is the rate law for a reaction that is second order with respect to A and first order with respect to B?
  • A. Rate = k[A][B]
  • B. Rate = k[A]^2[B]
  • C. Rate = k[A]^2
  • D. Rate = k[A][B]^2
Q. What is the rate law for a second-order reaction?
  • A. Rate = k[A]
  • B. Rate = k[A]^2
  • C. Rate = k[A][B]
  • D. Rate = k[A]^2[B]
Q. What is the relationship between atomic radius and ionization energy?
  • A. Directly proportional
  • B. Inversely proportional
  • C. No relationship
  • D. Fluctuates
Q. What is the relationship between atomic size and metallic character?
  • A. Directly proportional
  • B. Inversely proportional
  • C. No relationship
  • D. Fluctuates
Q. What is the relationship between enthalpy and internal energy at constant pressure?
  • A. ΔH = ΔU + PΔV.
  • B. ΔH = ΔU - PΔV.
  • C. ΔH = ΔU.
  • D. ΔH = PΔV.
Q. What is the relationship between enthalpy change and bond dissociation energy?
  • A. ΔH is always equal to bond dissociation energy.
  • B. ΔH is the sum of bond dissociation energies of reactants minus products.
  • C. ΔH is the sum of bond dissociation energies of products minus reactants.
  • D. There is no relationship.
Q. What is the relationship between enthalpy change and heat at constant pressure?
  • A. ΔH = Q
  • B. ΔH = W
  • C. ΔH = Q + W
  • D. ΔH = 0
Q. What is the relationship between enthalpy change and the heat capacity at constant pressure (Cp)?
  • A. ΔH = Cp * ΔT
  • B. ΔH = Cv * ΔT
  • C. ΔH = Cp / ΔT
  • D. ΔH = ΔT / Cp
Q. What is the relationship between enthalpy change and the spontaneity of a reaction?
  • A. A negative enthalpy change guarantees spontaneity
  • B. A positive enthalpy change guarantees spontaneity
  • C. Enthalpy change does not affect spontaneity
  • D. Spontaneity depends on enthalpy and entropy changes
Q. What is the relationship between Gibbs free energy (G) and spontaneity of a reaction?
  • A. G < 0 indicates non-spontaneous reaction
  • B. G > 0 indicates spontaneous reaction
  • C. G = 0 indicates spontaneous reaction
  • D. G < 0 indicates spontaneous reaction
Q. What is the relationship between Gibbs free energy (ΔG) and cell potential (E) in an electrochemical cell?
  • A. ΔG = -nFE
  • B. ΔG = nFE
  • C. ΔG = -E/nF
  • D. ΔG = E/nF
Q. What is the relationship between Gibbs free energy and cell potential?
  • A. G = -nFE
  • B. G = nFE
  • C. G = 0
  • D. G = nF/E
Q. What is the relationship between Gibbs free energy change (ΔG) and cell potential (E) in electrochemistry?
  • A. ΔG = -nFE
  • B. ΔG = nFE
  • C. ΔG = -E/nF
  • D. ΔG = E/nF
Q. What is the relationship between pressure and temperature in a closed container of gas?
  • A. Directly proportional
  • B. Inversely proportional
  • C. No relationship
  • D. Exponential relationship
Q. What is the relationship between pressure and temperature in a closed system according to Gay-Lussac's Law?
  • A. Pressure is directly proportional to volume
  • B. Pressure is inversely proportional to temperature
  • C. Pressure is directly proportional to temperature
  • D. Pressure is independent of temperature
Q. What is the relationship between pressure and volume for an ideal gas at constant temperature?
  • A. Boyle's Law
  • B. Charles's Law
  • C. Avogadro's Law
  • D. Graham's Law
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