168. Based on the given data, construct a diagram of limited mutual solubility for the aniline (C6H5NH2)-water system in the "temperature-composition" coordinates at p = const.
N
p/p
Composition
of the C6H5NH2 system, %
Temperature of mutual
solubility (homo- or heterogeneity)
1.
2.
3.
4.
5.
6. 10
20
40
60
80
90 102
157
168
162
140
86

Based on the state diagram, performing the necessary constructions, determine:

1. What type does this system belong to?

2. How does the solubility of aniline and water in each other change with decreasing temperature?

3. Is the system of composition 60% C6H5NH2 and 40% H2O homogeneous or heterogeneous at 150 0C and what is the composition of the phase (or phases)?
4. What changes will occur in the system at 150 0C if the aniline content increases to 90%?
5. What changes will occur in the system of composition 60% C6H5NH2 if: a) the temperature is increased to 170 0C; b) decreased to 120 0C?

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