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madisondesilva1c wrote:If the work is negative, how would the isobaric work equation change? Would the integral now be of a positive quantity instead of a negative one?
For an isobaric expansion/compression, the pressure is constant (isobaric: deltaP = 0), so the we would use the equation w = -P*deltaV. If the change in volume is positive, then the total value will be negative. If we're talking in terms of the integral, you are correct in saying it would then be a positive quantity. Since the equation has ln(Vf/Vi), where Vf is final volume and Vi is initial volume, this means that any time a gas expansion occurs, the final volume will be greater than the initial volume. This makes the natural log of their ratio a positive value, and because there is also a negative sign in the equation, work will then be negative.
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