Kalor panguwaban

Panas panguwaban utawa kalor penguwaban, utawa luwih pepak owah-owahan entalpi panguwaban standar, Δ_vH^o, 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

Èlemèn

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

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

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