Physical Chemistry

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Q. What is the effect of adding an inert gas at constant volume to a reaction at equilibrium?
  • A. Shifts equilibrium to the right
  • B. Shifts equilibrium to the left
  • C. No effect on equilibrium
  • D. Increases the reaction rate
Q. What is the effect of adding an inert gas at constant volume to a system at equilibrium?
  • A. Shifts the equilibrium to the right
  • B. Shifts the equilibrium to the left
  • C. No effect
  • D. Increases the reaction rate
Q. What is the effect of adding an inert gas to a reaction at equilibrium at constant volume?
  • A. Shifts the equilibrium to the right
  • B. Shifts the equilibrium to the left
  • C. No effect
  • D. Increases the reaction rate
Q. What is the effect of decreasing the volume of a gaseous reaction mixture at equilibrium?
  • A. Shifts to the side with more moles of gas
  • B. Shifts to the side with fewer moles of gas
  • C. No effect
  • D. Increases the temperature
Q. What is the effect of decreasing the volume of the container on the equilibrium of the reaction 2N2O(g) ⇌ 2N2(g) + O2(g)?
  • A. Shift to the left
  • B. Shift to the right
  • C. No change
  • D. Increase the rate of reaction
Q. What is the effect of increasing atomic number on electronegativity within a group?
  • A. It increases
  • B. It decreases
  • C. It remains the same
  • D. It fluctuates
Q. What is the effect of increasing pressure on the equilibrium of an exothermic reaction with fewer moles of gas on the product side?
  • A. Shifts to the left.
  • B. Shifts to the right.
  • C. No effect.
  • D. Increases temperature.
Q. What is the effect of increasing pressure on the solubility of a gas in a liquid?
  • A. Increases solubility
  • B. Decreases solubility
  • C. No effect
  • D. Depends on temperature
Q. What is the effect of increasing temperature on the cell potential of an electrochemical reaction?
  • A. Increases cell potential.
  • B. Decreases cell potential.
  • C. No effect on cell potential.
  • D. Depends on the reaction.
Q. What is the effect of increasing temperature on the cell potential of an electrochemical cell?
  • A. Increases cell potential
  • B. Decreases cell potential
  • C. No effect
  • D. Depends on the reaction
Q. What is the effect of increasing temperature on the enthalpy of a reaction that is endothermic?
  • A. Increases ΔH
  • B. Decreases ΔH
  • C. No effect on ΔH
  • D. Reverses the reaction
Q. What is the effect of increasing temperature on the enthalpy of a substance?
  • A. Enthalpy decreases
  • B. Enthalpy increases
  • C. Enthalpy remains constant
  • D. Enthalpy becomes negative
Q. What is the effect of increasing temperature on the equilibrium constant (K) for an exothermic reaction?
  • A. Increases K
  • B. Decreases K
  • C. No effect
  • D. Depends on concentration
Q. What is the effect of increasing temperature on the rate of a chemical reaction according to the Arrhenius equation?
  • A. Rate decreases
  • B. Rate remains constant
  • C. Rate increases exponentially
  • D. Rate increases linearly
Q. What is the effect of increasing temperature on the rate of a chemical reaction according to collision theory?
  • A. Decreases the rate
  • B. Increases the rate
  • C. No effect
  • D. Depends on the reaction
Q. What is the effect of increasing temperature on the rate of an electrochemical reaction?
  • A. Decreases rate
  • B. Increases rate
  • C. No effect
  • D. Reverses reaction
Q. What is the effect of increasing the concentration of a product in a reaction at equilibrium?
  • A. Shifts equilibrium to the right
  • B. Shifts equilibrium to the left
  • C. No change occurs
  • D. Increases reaction rate
Q. What is the effect of increasing the concentration of reactants on the rate of reaction for a zero-order reaction?
  • A. Rate increases
  • B. Rate decreases
  • C. Rate remains constant
  • D. Rate becomes negative
Q. What is the effect of increasing the electronegativity difference between two bonded atoms?
  • A. Increases bond length
  • B. Decreases bond strength
  • C. Increases ionic character
  • D. Decreases dipole moment
Q. What is the effect of increasing the electronegativity of atoms in a molecule on its dipole moment?
  • A. Increases dipole moment
  • B. Decreases dipole moment
  • C. No effect
  • D. Reverses dipole moment
Q. What is the effect of increasing the number of moles of gas in a container at constant temperature and volume?
  • A. Pressure decreases
  • B. Pressure remains constant
  • C. Pressure increases
  • D. Temperature increases
Q. What is the effect of increasing the number of moles of gas in a container at constant volume and temperature?
  • A. Pressure decreases
  • B. Pressure increases
  • C. Volume increases
  • D. Temperature increases
Q. What is the effect of increasing the pressure on the equilibrium of the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g)?
  • A. Shifts to the left
  • B. Shifts to the right
  • C. No effect
  • D. Increases the rate of reaction
Q. What is the effect of increasing the surface area of a solid reactant on the reaction rate?
  • A. No effect on the rate
  • B. Decreases the rate
  • C. Increases the rate
  • D. Only affects gas-phase reactions
Q. What is the effect of increasing the temperature on the cell potential of an electrochemical cell?
  • A. Increases
  • B. Decreases
  • C. No effect
  • D. Depends on the reaction
Q. What is the effect of increasing the temperature on the rate of a chemical reaction?
  • A. Decreases the rate
  • B. Increases the rate
  • C. No effect
  • D. Depends on the reaction
Q. What is the effect of removing a product from a reaction at equilibrium?
  • A. Shifts equilibrium to the right
  • B. Shifts equilibrium to the left
  • C. No effect on equilibrium
  • D. Increases the rate of reaction
Q. What is the effect of temperature on the rate constant of a reaction according to the Arrhenius equation?
  • A. Rate constant decreases with temperature
  • B. Rate constant increases with temperature
  • C. Rate constant is unaffected by temperature
  • D. Rate constant is only affected by activation energy
Q. What is the effect of temperature on the rate of a chemical reaction according to the Arrhenius equation?
  • A. Rate decreases exponentially with temperature
  • B. Rate increases linearly with temperature
  • C. Rate increases exponentially with temperature
  • D. Rate remains constant regardless of temperature
Q. What is the effect of temperature on the rate of a chemical reaction?
  • A. It decreases the rate
  • B. It has no effect
  • C. It increases the rate
  • D. It can either increase or decrease the rate
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