7. Known values of isobaric heat capacities Cp of water-ethanol solutions, in each of which the number of moles of the first component n1 is the same (n1=25 mol), and the number of moles of the second component n2 varies.
n2, mol 0 2 3.4 4.6 6 7.4 9 11
Cp, J/K 2090 2580 2880 3080 3300 3500 3660 3860
Determine graphically the partial molar isobaric heat capacity of ethanol and calculate the partial molar isobaric heat capacity of water in a solution with the number of moles of ethanol n2 equal to 8 mol.
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