An ideal liquid mixture of benzene and toluene (50% by volume each) is used in a plant at 27°C and 1 atm. Determine (a) the mixt
ure TLV, (b) the evaporation rate per unit area for this mixture, and (c) the ventilation rate required to keep the concentration below the TLV if the liquid is contained in a drum with a bung diameter of 5.1 cm. Assume the ventilation quality within the vicinity is average.
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Answer:
Explanation:
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In this case, since the enthalpy change for any process is computed by subtracting the enthalpy of the final state and the enthalpy of the initial state, for the given phase change, we subtract the enthalpy of the liquid (final state) and the enthalpy of the solid (initial state) considering this a melting process:
Which makes sense because this process absorbs energy.
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