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priyesh (1605)

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Olaaa!! Perrrfect answer. 259  [414 rates]

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hi Icy_2291
 note: that the temperature will remain constant from a to b as delta U is zero.now it's given that temp at b is 500K. therefore work done from process a to b is nR500ln(2v0/v0).Now since delta U is zero heat absorbed is equal to work done.similarly from process c to d heat will be released which is equal to nR300ln1/2= -nR300ln2
from process b to c heat absorbed is nc(300-500)= -nc200  where c is the molar heat capacity
from process d to a heat absorbed will be nc200 therefore heat absorbed during b to c & d to a cancel out
therefore total heat absorbed is equal to 2.303nR500log2 + 2.303nR300log1/2
= 2.303nRlog2(200)
= 2.303 * 2 * 8.3 * .3010 * 200 = 2301.433 J  2300 J
 
 
 

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