Free expansion of gas with frictionless piston is an example which process?
(a) Reversible
(b) Irreversible
(c) Cannot say
(d) None of the mentioned
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I need to ask this question from Ideal Reversible Processes topic in division Energy Balances that Include the Effects of Chemical Reaction, Ideal Processes, Efficiency and the Mechanical Energy Balance and Heats of Solution and Mixing of Basic Chemical Engineering