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Write one statement of first law of thermodyamics and its mathematical expression - Chemistry

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Short Note

Write one statement of first law of thermodyamics and its mathematical expression.

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Solution

First law of thermodynamics:-

If the quantity of heat supplied to a system is capable of doing work, then the quantity of heat absorbed by the system is equal to the sum of the increase in the internal energy of the system and the external work done by it.

The equation which supports the first law of thermodynamics mathematically is

ΔU = q + w

When expressed in the differential form, the same relationship takes the following form:

dQ = dU + dL

Concept: Chemical Thermodynamics and Energetic - First Law of Thermodynamics
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