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THERMODYNAMICS Internal nix : (U) U = PE + KE of molecules. Where KE of molecule = f KT (f = point of freedom & K is Boltzmann aeonian) and PE of 2 molecules depends upon intermolecular distance (ro). Zeroth truth of thermodynamic : If the bodies are in thermal vestibular sense with a third body separately, and then those two bodies are in thermally in equilibrium with each other. First law of nature of Thermodynamics : The amount of warmth supplied to a organization (dQ) capable of doing outer(prenominal) build is equal to midpoint of increase in the intrinsic energy (dU) and external work done by musical arrangement (dW) dQ = dU + dW. dQ = +ve when conflagrate supplied = - ve when heat jilted dU = +ve when temperature increases = ve when temperature decreases dW = +ve when work is done by system. = ve when work is done on system. Specific heats of driftes : Amount of catch fire required to raise the temperature of building block system by 1°C is Heat efficacy of a grease-gun (C) C Cv Cv Cp Cp dQ ndT molar particular(prenominal) heat of gunman at invariable volume. item heat of a gas as unceasing volume. molar specific heat of gas as continuous pressure. specific heat of gas at constant pressure units of Cp and Cv are J/mole/k units of Cp and Cv are J/kg/k Cp > Cv Relation betwen Specificheats of the gas a) Cp Cv = r = b) Cp- CV = R R - universal gas constant.

Ratio of specific heats = CP CV 1 R C , C Specificheats per unit mass of gas M p v As atomicity of gas increases, value of decreases 1.67 For magazine publisher For DAG = 1.4 1.33 For TAG Cp & Cv interms of Cv R , Cp 1 R 1 Number of degrees of freedom does a gas posses is f 2 1 Cv f R, Cp 2 2 f R 2 Isothermal Process: When a thermodynamic system undergoes a physical change in such a private manner that its temperature form constant then the change is cognize as isothermal changes. It follows Boyles law. P1V1 = P2V2. During isothermal change, internal energy remains constant. U is constant du = 0 dQ = dW = pdV Ex. Melting of ice, simmering of a liquid are...If you urgency to get a encompassing essay, give it on our website: Ordercustompaper.com

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