NEET Class neet Answered
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Explain me..why we can't use formula directly as
W = -2.303PV.log(P1/P2)
Asked by jhajuhi19 | 03 Mar, 2020, 07:54: AM
Expert Answer
Yes the formula can be used
W = 
if p V = n R T ..............(1)
where p is pressure , V is volume , n is number of moles, R is gas constant and T is absolute temperature.
differentiating eqn.(1), p dV + V dp = 0 or p dV = - V dp = -(nRT) ( dp/p)
Hence workone W =
Hence workdone , W = - 2 × 1.013 × 105 ×5 × 10-3 ln( 1/2) = 702 J
( SI units are used, pressure in Pa and volume in m3 )
Answered by Thiyagarajan K | 03 Mar, 2020, 08:37: AM
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