What is a matter Entropy?

Expert Solution

Entropy is a terminology in thermodynamics used to measure disorder or randomness of any system.
It is the heat content lost or absorbed isothermally and reversibly by any system divided by the temperature in kelvin at which the heat content absorbed or lost.
It is s state function not path function , represented by S .
S .= Q/T .ENTROPY OF A SYSTEM IS DEFINED AS THE QUANTITY OF HEAT ABSORBED OR LOST ISOTHERMALLY AND REVERSIBLY.
Entropy is measurement of randomness . For a spontaneous process or reaction to occur entropy should always be positive. For non spontaneous processes entropy is always negative.
THE THERMODYNAMIC RELATION BETWEEN ENTROPY , ENTHALPY AND FREE ENERGY IS GIVEN AS -

G = H - T S , THE SPONTANEITY OF ANY PROCESS CAN BE JUDGED WITH THIS RELATION.

7. An exemplary process . from solid to liquid to gaseous phases entropy increases. For solid system entropy can be negative, since in solid systems molecules or atoms or more ordered. For gaseous systems entropy is positive .

genius_generous answered 9 months ago

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