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Kalor panguwaban

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Panas panguwaban utawa kalor penguwaban, utawa luwih pepak owah-owahan entalpi panguwaban standar, ΔvHo, iku ènèrgi sing dibutuhaké kanggo ngowahi siji kuantitas dat dadi gas. Ènèrgi iki diukur ing titik didih dat lan sendyan ajiné racaké dikorèksi menyang 298 K, korèksi iki silik lan kerep luwih cilik tinimbang deviasi standar aji kaukur. Ajiné biyasa dinyatakaké sajeroning kJ/mol, sanadyan bisa uga sajeroning kJ/kg, kkal/mol, kal/g lan Btu/lb.

Aji kalor ing èlemèn kapilih

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Èlemèn

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Enthalpi panguwaban saka sawatara èlemèn ing kJ/mol, diukur ing titik umobé

Group → 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
↓ Period
1 H
0.44936

He
0.0845
2 Li
145.92
Be
292.40

B
489.7
C
355.8
N
2.7928
O
3.4099
F
3.2698
Ne
1.7326
3 Na
96.96
Mg
127.4

Al
293.4
Si
300
P
12.129
S
1.7175
Cl
10.2
Ar
6.447
4 K
79.87
Ca
153.6
Sc
314.2
Ti
421
V
452
Cr
344.3
Mn
226
Fe
349.6
Co
376.5
Ni
370.4
Cu
300.3
Zn
115.3
Ga
258.7
Ge
330.9
As
34.76
Se
26.3
Br
15.438
Kr
9.029
5 Rb
72.216
Sr
144
Y
363
Zr
581.6
Nb
696.6
Mo
598
Tc
660
Ru
595
Rh
493
Pd
357
Ag
250.58
Cd
100
In
231.5
Sn
295.8
Sb
77.14
Te
52.55
I
20.752
Xe
12.636
6 Cs
67.74
Ba
142
*
Hf
575
Ta
743
W
824
Re
 715 
Os
627.6
Ir
604
Pt
510
Au
334.4
Hg
59.229
Tl
164.1
Pb
177.7
Bi
104.8
Po
60.1
At
114
Rn
16.4
7 Fr
n/a
Ra
37
**
Rf
n/a
Db
n/a
Sg
n/a
Bh
n/a
Hs
n/a
Mt
n/a
Ds
n/a
Rg
n/a
Cn
n/a
Nh
n/a
Fl
n/a
Mc
n/a
Lv
n/a
Ts
n/a
Og
n/a

* Lanthanides La
414
Ce
414
Pr
n/a
Nd
n/a
Pm
n/a
Sm
n/a
Eu
n/a
Gd
n/a
Tb
n/a
Dy
n/a
Ho
n/a
Er
n/a
Tm
n/a
Yb
n/a
Lu
n/a
** Actinides Ac
n/a
Th
514.4
Pa
n/a
U
n/a
Np
n/a
Pu
n/a
Am
n/a
Cm
n/a
Bk
n/a
Cf
n/a
Es
n/a
Fm
n/a
Md
n/a
No
n/a
Lr
n/a
0–10 kJ/mol 10–100 kJ/mol 100–300 kJ/mol >300 kJ/mol
 

Dat liya

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Enthalpi panguwaban saka dat litané, diukur ing titik umob standardé:

Compound Heat of vaporization
(kJ mol-1)
Heat of vaporization
(kJ kg−1)
Ammonia 23.35 1371
Butane 21.0 320
Ethanol 38.6 841
Hidrogen 0.46 451.9
Methane 8.19 760
Methanol 35.3 1104
Propane 15.7 356
Phosphine 14.6 429.4
Water 40.65 2257

Rujukan

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  • Sears, Zemansky et. al., University Physics, Addison-Wessley Publishing Company, Sixth ed., 1982, ISBN 0-201-07199-1