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प्रश्न
Thermodynamics mainly deals with:
(i) interrelation of various forms of energy and their transformation from one form to another.
(ii) energy changes in the processes which depend only on initial and final states of the microscopic systems containing a few molecules.
(iii) how and at what rate these energy transformations are carried out.
(iv) the system in equilibrium state or moving from one equilibrium state to another equilibrium state.
उत्तर
(i) interrelation of various forms of energy and their transformation from one form to another.
(iv) the system in equilibrium state or moving from one equilibrium state to another equilibrium state.
Explanation:
The laws of thermodynamics deal with energy changes of macroscopic systems involving a large number of molecules rather than microscopic systems containing a few molecules. Laws of thermodynamics apply only when a system is in equilibrium or moves from one equilibrium state to another equilibrium state.
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संबंधित प्रश्न
Thermodynamics is not concerned about ______.
Consider the following reaction between zinc and oxygen and choose the correct options out of the options given below:
\[\ce{2 Zn (s) + O2 (g) -> 2 ZnO (s); ∆H = - 693.8 kJ mol^{-1}}\]
(i) The enthalpy of two moles of \[\ce{ZnO}\] is less than the total enthalpy of two moles of \[\ce{Zn}\] and one mole of oxygen by 693.8 kJ.
(ii) The enthalpy of two moles of \[\ce{ZnO}\] is more than the total enthalpy of two moles of \[\ce{Zn}\] and one mole of oxygen by 693.8 kJ.
(iii) 693.8 kJ mol–1 energy is evolved in the reaction.
(iv) 693.8 kJ mol–1 energy is absorbed in the reaction.
The internal energy (in J) when 90 g of water undergoes complete evaporation at 100°C is ______.
(Given ΔHvap for water at 373 K = 41 kJ/mol, R = 8.314 JK−1 mol−1)
Which one of the following equations does not correctly represent the first law of thermodynamics for the given processes involving an ideal gas? (Assume non-expansion work is zero)
