- #1
knc
- 20
- 0
Homework Statement
Homework Equations
[tex] PV = nRT \\ W = - \int_{V_i}^{V_f} P dV [/tex]
[tex] \Delta E_{int} = Q + W [/tex]
The Attempt at a Solution
a)[/B]
Since this is a cyclic process, the change in internal energy of the system is 0.
[tex] \Delta E_{int} = 0 [/tex]
The process causes some ice to melt, meaning heat transfers out of the system.
To maintain the model of a cyclic process the work being done on the gas (positive) is equal-but-opposite to the heat transferring out of the gas (negative)
Heat transferring into the water:
[tex] Q = m L_f \\
W = - (-Q) = m L_f [/tex]
This is intuitive and makes sense, however I don't understand the relevance of the very quickly part.
I do understand that this suggests this is not a quasi-static process and that the system is not at equilibrium at all times. but I don't see what the implications of that are.
b)
Rearranging the ideal gas law and plugging into work equation:
[tex] W = - \int_{4v_2}^{v_2} \frac{nrT}{V} dV [/tex]
I don't think I am doing this part correctly.
c)
I don't know where to begin with this.