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What is the unit of entropy? - Chemistry

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प्रश्न

What is the unit of entropy?

एका वाक्यात उत्तर

उत्तर

SI unit of entropy is J K−1

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Various Statements of the Second Law of Thermodynamics
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Thermodynamics - Evaluation [पृष्ठ २२४]

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सामाचीर कलवी Chemistry - Volume 1 and 2 [English] Class 11 TN Board
पाठ 7 Thermodynamics
Evaluation | Q II. 5. b. | पृष्ठ २२४

संबंधित प्रश्‍न

The correct thermodynamic conditions for the spontaneous reaction at all temperature is


∆S is expected to be maximum for the reaction


The values of ∆H and ∆S for a reaction are respectively 30 kJ mol–1 and 100 JK–1 mol–1. Then the temperature above which the reaction will become spontaneous is


What is the usual definition of entropy?


Identify the state and path functions out of the following:

  1. Enthalpy
  2. Entropy
  3. Heat
  4. Temperature
  5. Work
  6. Free energy

Calculate the entropy change in the system, and surroundings, and the total entropy change in the universe during a process in which 245 J of heat flows out of the system at 77°C to the surrounding at 33°C.


30.4 kJ is required to melt one mole of sodium chloride. The entropy change during melting is 28.4 JK−1 mol−1. Calculate the melting point of sodium chloride.


You are given normal boiling points and standard enthalpies of vapourisation. Calculate the entropy of vapourisation of liquids listed below.

Liquid Boiling points (°C) ΔH (kJ mol−1)
Ethanol 78.4 + 42.4

You are given normal boiling points and standard enthalpies of vapourisation. Calculate the entropy of vapourisation of liquids listed below.

Liquid Boiling points (°C) ΔH (kJ mol−1)
Toluene 110.6 + 35.2

Cyanamide (NH2CN) is completely burnt in excess oxygen in a bomb calorimeter, ΔU was found to be −742.4 kJ mol−1, calculate the enthalpy change of the reaction at 298 K.\[\ce{NH2CN_{(s)} + 3/2 O2_{(g)} -> N2_{(g)} + CO2_{(g)} + H2O_{(l)}}\] ΔH = ?


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