Taking as references pure liquid sulfuric acid at 77°F and pure liquid water at 32°F and without using Figure 8.5-1, calculate Ĥ(Btu/lbm) for each of the following substances. For each substance, also report the value you would read from Figure 8.5-1.

(a) H₂O (l, 120°F)

(b) H₂SO₄ (l, 200°F)

(c) 60 wt% H₂SO₄ (aq, 200°F)

Figure 8.5-1

Transcribed Image Text:

140 120 100 80 60 40 20 -20 200°F -40 180 -60 -80 60 32°F 80 -100 40 -120 0.90 1.00 0.80 -140 0.70 0.50 0.60 0.40 0.30 0.10 0.20 Mass fraction of H,SO, A(Btu/lb, solution) Freezing line