Question

first law of thermodynamics

Answer 1

First law of thermodynamics
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It states that the heat energy given to a system is equal to the sum of the increase in internal energy and the work done by the system
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dQ = dU + dW
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Answer 2

Explanation:

First Law of Thermodynamics (FLOT)-: Actually this law is based on conservation of energy and according to first law of thermodynamics in physical chemistry energy can neither be created nor be destroyed it only can we transform in other form from any form of energy.

* This law was given by Robert Mayer and Helmholtz.

* We can write it as ∆ E = q + w

where,

• q and w will be path function.
• E will a state function.
• q will be the energy given to the system.
• w be the work done by the system.
• ∆E will be the change in the internal energy.

* In solving numerical sign matters a lot so we need to put value of q and w with proper sign convention given by IUPAC.