Other questions in this quiz

2. What is the difference in the energy profile diagram for a reaction with a catalyst and one without?

  • Lower peak
  • Enthalpy change
  • Earlier peak
  • Broader peak

3. Consider the following reversible reaction: 2SO2 (g) + O2 (g) -> 2 SO3 (g). Which of the following statements is true?

  • Equilibrium shifts to the right as pressure rises
  • Equilibrium shifts to the right as the concentration of the reactants falls
  • Equilibrium shifts to the right as a catalyst is added
  • Equilibrium shifts to the left as temperature rises

4. Which of the following is NOT a feature of a Maxwell-Boltzmann Curve

  • The area under the curve represents the total number of molecules
  • Curve starts at the origin
  • The activation energy is never at the peak of the curve
  • The curve never crosses the x axis

5. Given that ΔH°c of S is – 442.6 kJmol-1, ΔH°c of H2 is – 285.8 kJmol-1 and ΔH°c of H2S is – 519.1 kJmol-1, find the standard enthalpy change of formation of hydrogen sulfide.

  • -156.3 kJmol-1
  • -209.3 kJmol-1
  • -1247.5 kJmol-1
  • -495.1 kJmol-1


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