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(a) From the data, plot the enthalpy of 1 mole of solution at 27ᵒC as a...

(a) From the data, plot the enthalpy of 1 mole of solution at 27ᵒC as a function of the weight percent HNO3. Use as reference states liquid water at 0ᵒC and liquid HNO3 at 0ᵒC. You can assume that Cp for H2O is 75 J/g mol .ᵒC and for HNO3, 125 J/g mol.ᵒC.

-ΔHsoln at 27ᵒC (J/g mol HNO3) Moles H2O added To 1 mole HNO3
0 0.0
3350 0.1
5440 0.2
6900 0.3
8370 0.5
10880 0.67
14230 1.0
17150 1.5
20290 2.0
24060 3.0
25940 4.0
27820 5.0
30540 10.0
31170 20.0

b) Compute the energy absorbed or evolved at 27ᵒC on making a solution of 4 moles of HNO3, and 4 moles of water by mixing a solution of 33 1/3 mol % acid with one of 60 mol % HNO3.

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