Physical Chemistry

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Q. What is the pH of a solution that has a hydronium ion concentration of 1 x 10^-5 M?
  • A. 5
  • B. 7
  • C. 9
  • D. 10
Q. What is the pH of a solution that has a hydroxide ion concentration of 1.0 x 10^-3 M?
  • A. 11
  • B. 10
  • C. 3
  • D. 1
Q. What is the pH of a solution that has a [H+] concentration of 1 x 10^-7 M?
  • A. 7
  • B. 0
  • C. 14
  • D. 1
Q. What is the pH of a solution that is 0.1 M in both acetic acid and sodium acetate?
  • A. 4.76
  • B. 5.76
  • C. 6.76
  • D. 7.76
Q. What is the pH of a solution with a hydroxide ion concentration of 0.001 M?
  • A. 11
  • B. 12
  • C. 13
  • D. 14
Q. What is the pH of a solution with a hydroxide ion concentration of 1.0 x 10^-4 M?
  • A. 10
  • B. 4
  • C. 7
  • D. 14
Q. What is the pH of a solution with [H+] = 1 x 10^-6 M?
  • A. 6
  • B. 7
  • C. 8
  • D. 5
Q. What is the phenomenon called when a liquid changes to gas at a temperature below its boiling point?
  • A. Evaporation
  • B. Condensation
  • C. Sublimation
  • D. Freezing
Q. What is the phenomenon called when a liquid changes to gas at temperatures below its boiling point?
  • A. Evaporation
  • B. Condensation
  • C. Sublimation
  • D. Vaporization
Q. What is the phenomenon called when a liquid rises in a narrow tube against gravity?
  • A. Capillarity
  • B. Viscosity
  • C. Surface tension
  • D. Hydrostatic pressure
Q. What is the primary characteristic of liquids that distinguishes them from solids?
  • A. Definite shape
  • B. Definite volume
  • C. Incompressibility
  • D. Fluidity
Q. What is the primary driving force for adsorption in physisorption?
  • A. Chemical bonds
  • B. Van der Waals forces
  • C. Hydrogen bonds
  • D. Ionic interactions
Q. What is the primary factor affecting colligative properties?
  • A. Nature of solute
  • B. Concentration of solute
  • C. Temperature
  • D. Volume of solvent
Q. What is the primary factor that affects the rate of a chemical reaction?
  • A. Concentration
  • B. Temperature
  • C. Catalyst
  • D. All of the above
Q. What is the primary factor that affects the rate of adsorption of a gas on a solid surface?
  • A. Temperature
  • B. Pressure
  • C. Surface area of the adsorbent
  • D. Nature of the gas
Q. What is the primary factor that affects the state of matter of a substance?
  • A. Temperature
  • B. Color
  • C. Mass
  • D. Volume
Q. What is the primary function of a cathode in an electrochemical cell?
  • A. To oxidize species
  • B. To reduce species
  • C. To provide electrons
  • D. To balance charge
Q. What is the primary function of a salt bridge in a galvanic cell?
  • A. To provide a path for electrons
  • B. To maintain charge balance
  • C. To increase voltage
  • D. To decrease resistance
Q. What is the primary intermolecular force present in gases?
  • A. Hydrogen bonding
  • B. Dipole-dipole interactions
  • C. London dispersion forces
  • D. Ionic bonding
Q. What is the primary intermolecular force present in liquid water?
  • A. Ionic bonds
  • B. Covalent bonds
  • C. Hydrogen bonds
  • D. Van der Waals forces
Q. What is the primary intermolecular force present in liquids?
  • A. Ionic bonds
  • B. Covalent bonds
  • C. Dispersion forces
  • D. Dipole-dipole interactions
Q. What is the primary intermolecular force present in water?
  • A. Ionic bonds
  • B. Covalent bonds
  • C. Hydrogen bonds
  • D. Van der Waals forces
Q. What is the primary mechanism of adsorption in physisorption?
  • A. Chemical bonding
  • B. Van der Waals forces
  • C. Hydrogen bonding
  • D. Ionic bonding
Q. What is the primary process involved in the adsorption of gases on solid surfaces?
  • A. Diffusion
  • B. Condensation
  • C. Chemical reaction
  • D. Van der Waals forces
Q. What is the primary reaction occurring in a lead-acid battery during discharge?
  • A. Pb + PbO2 + 2H2SO4 → 2PbSO4 + 2H2O
  • B. PbSO4 + 2H2O → Pb + PbO2 + 2H2SO4
  • C. 2Pb + 2H2SO4 → 2PbSO4 + H2
  • D. PbO2 + 2H2SO4 → Pb + 2H2O + O2
Q. What is the primary reason for the compressibility of gases?
  • A. High density
  • B. Low temperature
  • C. Large intermolecular spaces
  • D. Strong intermolecular forces
Q. What is the primary reason for the elevation of boiling point in a solution?
  • A. Increased molecular weight
  • B. Decreased vapor pressure
  • C. Increased solubility
  • D. Decreased temperature
Q. What is the primary reason for the formation of a precipitate in a saturated solution?
  • A. Excess solute
  • B. Temperature increase
  • C. Change in pH
  • D. Decrease in solubility product
Q. What is the primary reason for the high boiling point of water compared to other similar-sized molecules?
  • A. Hydrogen bonding
  • B. Van der Waals forces
  • C. Ionic bonding
  • D. Covalent bonding
Q. What is the primary reason for the increase in pH when a weak acid is titrated with a strong base?
  • A. Formation of water
  • B. Neutralization of acid
  • C. Formation of a conjugate base
  • D. All of the above
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