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find the work done when 1 mole of gas is expanded reversibily isothermal from 5atm to 1 atm at 25degree centigrate
Wisothermal = 2.303 n R T log P1/P2 n = no of moles of gasR = universal gas constant = 8.314 J / mol. KT = temperature in kelvin (at which isothermal process is occuring) = 25 +273 = 298 KP1 and P2 = Initial pressure and final pressure. (not necessary to convert into SI units because, its ratio and units will cancel out)P1 / P2 = 5 Substitute all values, we get (take log 5 = 0.67)W = 3988J = 3.9 KJ
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