Skip to main content

Table 4 Results of the experimental determination of combustion energies of the investigated compounds at 298.15 K

From: Thermodynamic properties of 5(nitrophenyl) furan-2-carbaldehyde isomers

Sample

m(cpd),g

ΔT, V

ΔU Σ , J

ΔU fuse , J

ΔU ter , J

ΔU HNO3 , J

ΔU carbon , J

c U(cpd), J g−1

m exp /m calc

5(2-nitrophenyl)furan-2-carbaldehyde; − c U(cpd) average  = 23,674 ± 31 J g−1

 A

0.32424

0.5592

8542.9

100.4

795.4

8.3

17.6

23,701

0.9964

 A

0.30861

0.5368

8200.7

87.8

834.7

9.4

23.3

23,639

0.9996

 A

0.35576

0.6065

9265.5

94.1

800.2

10.6

40.8

23,683

0.9972

 B

0.27531

0.4826

7372.7

110.4

802.6

11.8

49.6

23,677

0.9968

 C

0.30758

0.5366

8197.6

108.1

834.0

11.8

21.5

23,635

0.9994

 C

0.35026

0.5968

9117.3

112.3

698.5

11.8

5.0

23,710

0.9994

5-(3-nitro phenyl)-furan-2-carbaldehyde; − c U(cpd) average  = 23,633 ± 37 J g−1

 A

0.40261

0.6779

10,356.3

85.2

932.0

27.7

18.4

23,595

0.9901

 A

0.37500

0.6246

9542.0

94.5

899.8

17.7

29.5

23,645

0.9953

 B

0.29162

0.4984

7614.1

84.2

791.6

23.6

17.2

23,671

0.9952

 B

0.32049

0.5496

8396.2

89.6

842.5

17.7

12.8

23,581

0.9987

 C

0.35108

0.6020

9196.8

91.4

831.5

25.4

10.2

23,665

0.9940

 C

0.45773

0.7687

11,743.4

87.3

969.5

17.9

22.4

23,640

0.9922

5-(4-nitro phenyl)-furan-2-carbaldehyde; − c U(cpd) average  = 23,533 ± 31 J g−1

 A

0.34298

0.5852

8940.1

74.3

818.3

12.9

16.9

23,507

0.9986

 B

0.35493

0.6003

9170.8

87.0

734.4

20.1

22.3

23,553

0.9990

 B

0.39564

0.6757

10,322.7

101.3

946.3

14.8

30.5

23,520

0.9984

 B

0.39158

0.6564

10,027.8

97.9

771.6

14.8

26.4

23,586

0.9929

 C

0.37234

0.6233

9522.2

91.6

721.7

14.8

44.8

23,510

0.9983

 C

0.41218

0.6907

10,551.8

100.5

782.4

14.8

31.3

23,522

0.9990