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In a irreversible reaction, the reactants react to form the products, which cannot revert back into reactants. In reversible reactions, as the reactants react with other reactants to form products, the products are reacting with other products to form reactants. Combustion cannot be undone. i am not sure as to why the pressures are different
I think the difference between reversible and irreversible work is that infinitesimally small changes in pressure are considered insignificant in irreversible systems and pressure is considered constant; whereas, in reversible processes, external pressure is not constant and infinitesimal changes will affect the system, which is why we use the integral to calculate work in reversible systems.
The question will tell you whether it is a reversible or irreversible reaction. The work done will be different because they use different equations to calculate work. Reversible reaction: W=-PV. Irreversible reaction: W=-nrTln(V2/V1).
Kathryn 1F wrote:So which one does more work? I think it would be reversible bc of the curve, but I'm not entirely sure why
Reversible isothermal expansion would do more work because it calculates the amount of work done over the courses of the entire expansion, summing the work done at infinitesimally small intervals.
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