ques 30

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Why is the w = -3.43? Can't it be found by pv=nrt using the volumes to calc w = -pdV? If so I got a different answer.

-- Anonymous, February 26, 2000


work is only done when vaporizationoccors and when vapor expands as temp increases. Therefore you need to find volume at 100C and 140C using


and know that volume of 1 mol of liquid water = 0.018L

w=-PdV(liquid to vapor) - PdV(100C to 140C)

w= -(1atm)*(30.6L-.018L) - (1atm)*(33.9L-30.6L) = -3.43

say if you need more help

-- Anonymous, February 26, 2000

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