11th Chemistry Chapter 7 Notes

Important Complete Computerized 11th Chemistry Chapter 7 Notes written by Professor Mr. Adnan Haider Suib. These notes are very helpful in the preparation of 11th Chemistry Chapter 7 Notes Thermochemistry of First-Year Chemistry for the students of the intermediate and these are according to the paper patterns of all Punjab boards.

Summary and Contents:
Topics which are discussed in the notes are given below:
  • Important Fill in the blanks with answers of Chapter Number 7: Thermochemistry of First-year Chemistry Punjab Textbook Boards.
  • What is thermochemistry?
  • Differentiate between spontaneous and non-spontaneous reactions.
  • Is it necessary that spontaneous reactions are exothermic in nature? Explain.
  • Burning of a candle is a spontaneous process. Justify.
  • Is it true that a non-spontaneous process never happen in universe? Explain it.
  • Spontaneous reaction always proceeds in the forward direction. Give reason?
  • Why in exothermic reaction, heat is released from the system?
  • Describe system and surrounding? OR Differentiate system and surrounding. OR Differentiate between system and surrounding. 
  • Define system with an example. 
  • Define state function. OR What is state function?
  • What is difference between state and state function? OR Define state and state function with one example of each.
  • Differentiate between internal energy and enthalpy.
  • State first law of thermodynamics with its mathematical form. 
  • What is meant by heat (q) and work (w) in thermochemistry?
  • Define standard enthalpy of atomization with an example. 
  • How enthalpy of formation of CO is determined from graphite?
  • Acid-base neutralization process is always exothermic. Give reason. 
  • Enthalpy is a state function Justify.
  • Define enthalpy of combustion and enthalpy of solution. OR State with one example, enthalpy of combustion. 
  • Define the following with one example in each case. (a) Standard enthalpy of reaction. (b) Standard enthalpy of combustion.
  • What does the symbol ∆Hn° denotes. Define this quantity? OR Enthalpy of neutralization is for an aid and base, Explain with example. OR What is meant by standard Enthalpy of Neutralization?
  • Why the enthalpy of neutralization has the same value for any strong acid with any strong base?
  • Why is it necessary to mention the physical state of reactants and products in thermochemical reactions?
  • Define standard enthalpy of formation with two examples. 
  • Draw labeled diagram of bomb calorimeter.
  • Define the term "Joule" and convert 15 calories to joules.
  • State the Hess's law of constant heat summation. 
  • Justify Hess's law with an example. OR State Hess's Law and writes is mathematical form. 
  • Burning of natural gas is a spontaneous process, justify.
  • Explain the term "Atomization energy" with an example.
  • Define Born-Haber cycle and lattice energy. OR What is difference between Born-Haber cycle and lattice energy?
  • Define internal energy and point out; is it a state function or not?
  • Differentiate between law of conservation of energy and Hess's law. 
  • What is thermochemical reaction, give their types? OR Define Thermochemical equation.
  • Differentiate between exothermic reaction and endothermic reaction. 
  • Burning of Natural gas is spontaneous process.
  • Justify that heat of formation of a compound is the sum of all other enthalpies.
  • What is difference between heat and temperature?
  • Define heat and give its units.
  • Define heat capacity of a body. Give mathematical expressions.
  • What is the physical significance of equation ∆H = qp?
  • Define enthalpy. Give its mathematical form and prove that ∆H = qp? OR What is first law of thermodynamics? Prove that ∆H = qp? OR What is the first law of thermodynamics? Give its mathematical form. (V.Imp)
  • What is Enthalpy of a reaction? How is ∆H of a reaction measured in laboratory by glass calorimeter? 
  •  Define the following enthalpies and give one example of each:  Standard enthalpy of formation.  Standard enthalpy of atomization.
  • Explain the following terms:  Standard heat of Neutralization.  Standard Enthalpy of solution.

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