How to Compare the Work Done in Thermodynamics – Part 1

The first law of thermodynamics states that, when energy passes into or out of a system (as work, heat, or matter), the system's internal energy changes in accordance with the law of conservation of energy.


In thermodynamics the reference is the internal energy (in chemistry). Anything that increases internal energy is positive and that decreases internal energy is negative.

Question:

A given mass of gas expands from the state A to the state B by three paths 1, 2 & 3 as shown in the figure below. If w1, w2 & w3 respectively be the magnitude work done by the gas along the three paths, then show their order.



Click to enlarge the image

Solution:



Click to enlarge the image

Work done❓ Let Chemaficionado know at mychemistryhomework@gmail.com❗

References:
(1)    Wikipedia Contributors. Laws of thermodynamics. Wikipedia. https://en.wikipedia.org/wiki/Laws_of_thermodynamics.

(2)    Ncert. Chemistry : Textbook for Class XI - Part.I; National Council Of Educational Research And Training: New Delhi.

(3)    Internal energy. Wikipedia. https://en.wikipedia.org/wiki/Internal_energy

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