NCERT Solutions For Class 11 Chemistry Chapter 6: Chemical Thermodynamics

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NCERT Solutions for class 11 Chemistry chapter 6 Chemical Thermodynamics are provided in this article. Some of the important topics in Thermodynamics chapter include:

  1. Applications of Thermodynamics
  2. Heat Capacity
  3. Standard Enthalpy for Formation
  4. Bond Enthalpy
  5. Phase Transition
  6. Isobaric Process
  7. Isothermal Process
  8. Second Law of Thermodynamics
  9. Zeroth Law of Thermodynamics

Expected no.of questions: 4 to 6 questions of total 9 marks

Download PDF: NCERT Solutions for Class 11 Chemistry Chapter 6 pdf


NCERT Solutions for Class 11 Chemistry Chapter 6

NCERT Solutions for Class 11 Chemistry Chapter 6 Chemical Thermodynamics is given below.


Class 11 Chemistry Chapter 6 Chemical Thermodynamics – Important Topics

Thermodynamics is the study of the relation between Heat, Work, Temperature, and Energy. The laws of thermodynamics are used to describe how the energy in a system changes and also determine if the system is able to perform useful work in its surroundings. 

There are four types of thermodynamic process:

  • Isothermal Process: Temperature residues are the same all through the procedure.
  • Adiabatic Process: Heat exchanged with surrounds sums to zero.
  • Isochoric Process: Volume remnants same all over the process.
  • Isobaric Process: Pressure remains similar all through the process.

Enthalpy: It is known as the total heat content of the system which is equal to the sum of internal energy and pressure-volume work.

Enthalpy H = U + PV

Gibbs Free Energy ΔG = ΔH – TΔS

The entropy is an amount of degree of randomness or disorder of a method. The entropy of a substance is slightest in a solid-state while it is supreme in a gaseous state.

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CBSE CLASS XII Related Questions

  • 1.
    From the given data of \(E^{\circ}\) values, answer the following questions :
    (I) Why \(E^{\circ}_{M^{2+}/M}\) show irregular trend in the above values ?
    (II) Why is \(E^{\circ}_{Cu^{2+}/Cu}\) value exceptionally positive ?
    (III) Why \(E^{\circ}_{Mn^{2+}/Mn}\) value is highly negative ?


      • 2.

        (a) Write two structural differences between DNA and RNA.

        (b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.

        (c) Which types of bonds hold the polypeptide chains in fibrous proteins ?


          • 3.
            Draw the structure of 'X' in the following reaction:


              • 4.
                Consider the decomposition of hydrogen peroxide \( (\mathrm{H_2O_2}) \) as per the equation given below : \[ 2\mathrm{H_2O_2} \xrightarrow[\text{Alkaline medium}]{I^-} 2\mathrm{H_2O} + \mathrm{O_2} \] The mechanism for this reaction was found to be : Step I : \( \mathrm{H_2O_2} + I^- \longrightarrow \mathrm{H_2O} + IO^- \) (slow) Step II : \( \mathrm{H_2O_2} + IO^- \longrightarrow \mathrm{H_2O} + I^- + \mathrm{O_2} \) (fast) (a) Write the rate law expression. (b) Determine the order of reaction with respect to \( \mathrm{H_2O_2} \), \( I^- \) and overall order of reaction. (c) What is the molecularity of the reaction in Step II ?


                  • 5.

                    Conductivity of \( 2.5 \times 10^{-4} \) M methanoic acid solution is \( 5.25 \times 10^{-5} \) S cm\(^{-1}\).

                    (a) Calculate its molar conductivity.

                    (b) Calculate its degree of dissociation.

                    [Given : \( \lambda^{\circ}_{(\mathrm{H^+})} = 349.5 \) S cm\(^2\) mol\(^{-1}\) and \( \lambda^{\circ}_{(\mathrm{HCOO^-})} = 50.5 \) S cm\(^2\) mol\(^{-1}\)]


                      • 6.
                        Following reaction takes place in one step:

                        \(2A + B \rightarrow 2C\)

                        How will the rate of above reaction change if the volume of the reaction vessel is decreased to one third of its original volume? Will there be any change in the order of reaction with the reduced volume?

                          CBSE CLASS XII Previous Year Papers

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