Thermochemical Data and Enthalpy Quizzes
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Questions and Answers

In the given thermochemical data, if N2O5(g) is formed instead of N2O5(s) in the reaction, what will be the value of ΔrH?

  • +111 kJ
  • -57 kJ (correct)
  • -111 kJ
  • +57 kJ
  • What is the enthalpy of formation of ion at 25ºC?

  • -22.88 kJ
  • -343.52 kJ
  • +228.88 kJ (correct)
  • -228.88 kJ
  • What is the average bond enthalpy of N—H bond in NH3?

  • +352 kJ mol–1
  • -1102 kJ (correct)
  • +1056 kJ mol–1
  • -964 kJ mol–1
  • In the context of ΔrG° signs for the reactions involving lead and tin, what are the signs for lead and tin in the reactions?

    <p>For lead +2, for tin +2</p> Signup and view all the answers

    What is the value of internal energy change for the reaction C2H5OOH(1) + 3O2(g) 2CO2(g) + 3H2O(1) at 27ºC?

    <p>+1366.5 kJ mol–1</p> Signup and view all the answers

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