Standard Entropy Values
Standard entropy values indicate the absolute entropy (in \(\unit{\joule\per\mole\per\K}\)) of a variety of substances at \(25\unit{\degreeCelsius}\). Learn more on our Tutorial page.
Due to the number of elements to render, the substance column in the below version is not made to be accessible with navigable elements. It is still searchable, but if you want a version that you can also scan through the formula itself, please use one of the below but pages:
- Entropy Values with Formula A through B
- Entropy Values with Formula C
- Entropy Values with Formula D through K
- Entropy Values with Formula L through O
- Entropy Values with Formula P through Z
Visually impaired users can use their screen readers built in search to search for the substance (no spaces, subscript and superscripts just as normal inline letters) and quickly navigate to the row.
Substances and their entropy values (in joules per mole per kelvin) at 25 degrees Celsius. A searchable version of the substance chemical formula has been placed. You can use the browser built in search to search for the compound, typing everything in one line (all subscript and superscripts for this search are just normal numbers with no spaces between).
Substance
Entropy
Notes
Ag(s)
42.6
Ag(g)
172.9
Ag-(aq)
72.7
Ag2C2O4(s)
209.2
Ag2CO3(s)
167.4
Ag2CrO4(s)
217.6
Ag2MoO4(s)
213.4
Ag2O(s)
121.3
Ag2O2(s)
117.2
Ag2O3(s)
100.4
Ag2S(s)
144
alpha, orthorhombic
Ag2S(s)
150.6
beta
Ag2Se(s)
150.7
Ag2SeO3(s)
230.1
Ag2SeO4(s)
248.5
Ag2SO3(s)
158.2
Ag2SO4(s)
200.4
Ag2Te(s)
154.8
AgBr(s)
107.1
AgBrO3(s)
152.7
AgCl(s)
96.2
AgClO2 (s)
134.6
AgCN(s)
107.2
AgF(s)
84
AgF•2H2O(s)
174.9
AgI(s)
115.5
AgIO3(s)
149.4
AgN3(s)
104.2
AgNO2(s)
128.2
AgNO3(s)
140.9
AgO(s)
57.8
AgOCN(s)
121.3
AgReO4(s)
153.1
AgSCN(s)
131
Al(BH4)3(l)
289.1
Al(BH4)3(g)
379.1
Al(CH3)3(l)
209.4
Al(s)
28.3
Al(l)
35.2
Al(g)
164.6
Al3+(aq)
-321.7
Al(OH)4(aq)
117
Al2O3(s)
50.9
AlBr3(s)
180.2
AlCl3(s)
112.3
AlF3(s)
66.5
AlI3(s)
189.5
AlN(s)
20.2
AlN(g)
211.7
AlO(g)
218.3
AlOCl(s)
54.4
AlOCl(g)
248.8
AlOF(g)
234.3
AlOH(g)
216.3
AlPO4(s)
90.8
AlS(g)
230.5
Ar(g)
154.9
Au(s)
47.4
Au(g)
180.4
Au(CN)2-(aq)
171.5
AuBr4-(aq)
336
AuCl4-(aq)
266.9
AuH(g)
211
B(s)
5.9
B(g)
153.3
B(CH3)3(l)
238.9
B(CH3)3(g)
314.6
B(OH)4-(aq)
102.5
B2(g)
201.8
B2Cl4(l)
262.3
B2H6(g)
232
B2O2(g)
242.4
B2O3(s)
54
B2O3(g)
279.7
B2S3(s)
100
B3N3H6(l)
199.6
B4C(s)
27.1
B5H9(l)
184.2
Ba(s)
62.3
Ba(l)
66.7
Ba(g)
170
Ba2+(aq)
9.6
Ba(BrO3)2(s)
242.7
Ba(BrO3)2•H2O(s)
292.5
Ba(ClO3)2(s)
196.6
Ba(ClO4)2•3H2O(s)
393.3
Ba(IO3)2(s)
249.4
Ba(IO3)2•H2O(s)
297.1
Ba(N3)2•H2O(s)
188.3
Ba(NO3)2(s)
213.8
Ba(OH)2(s)
112
Ba(OH)2•8H2O(s)
426.8
Ba(ReO4)2•4H2O(s)
376.6
Ba2TiO4(s)
196.6
BaBr2(s)
146.4
BaBr2(g)
330.5
BaBr2•2H2O(s)
225.9
BaCl2(s)
123.7
BaCl2(l)
143.5
BaCl2(g)
325.6
BaCl2•2H2O(s)
202.9
BaCO3(s)
112.1
BaCrO4(s)
158.6
BaF2(s)
96.4
BaF2(l)
121.3
BaF2(g)
301.2
BaH2(s)
63
BaI2(s)
165.1
BaI2(l)
183.7
BaI2(g)
348.1
BaMoO4(s)
138.1
BaO(s)
72.1
BaO(l)
96.6
BaO(g)
235.4
BaS(s)
78.2
BaSeO3(s)
167.4
BaSeO4(s)
175.7
BaSiF6(s)
163.2
BaSiO3(s)
109.6
BaSO4(s)
132.2
BaTiO3(s)
107.9
BaZrO3(s)
124.7
BBr(g)
224.9
BBr3(g)
324.1
BBr3(l)
229.7
BCl3(l)
206.3
BCl3(g)
290
BCl2F(g)
284.5
BClF2(g)
272
Be(s)
9.5
Be(l)
16.5
Be(g)
136.3
Be2+(aq)
-129.7
Be(OH)2(s)
45.5
Be2C(s)
16.3
Be2SiO4(s)
64.3
Be3N2(s)
34.1
cubic
BeAl2O4(s)
66.3
BeBr2(s)
106.3
BeC2(g)
218.4
BeCl2(s)
75.8
BeF2(s)
53.4
BeI2(s)
120.5
BeO(s)
13.8
BeO(g)
197.5
BeSO4(s)
77.9
BeSO4•4H2O(s)
233
BeWO4(s)
88.4
BF3(g)
254
BF4-(aq)
179.9
BH(g)
171.8
BH3(g)
188.2
BH4-(aq)
110.5
Bi(s)
56.7
Bi(g)
187
Bi2O3(s)
151.5
BiCl3(s)
177
BN(g)
212.2
Br(g)
175
Br-(aq)
82.6
Br2(l)
152.2
Br2(g)
245.5
BrCl(g)
240.1
BrF(g)
229
BrF3(l)
178.2
BrF3(g)
292.5
BrF5(l)
225.1
BrO(g)
237.4
BrO-(aq)
41.8
BrO3-(aq)
163.2
C(s)
2.4
diamond
C(s)
5.7
graphite
C(g)
158.1
C12H22O11(s)
360.2
sucrose
C2H2(g)
200.9
ethyne
C2H4(g)
219.6
ethene
C2H5OH(l)
160.7
ethanol
C2H5OH(g)
282.7
ethanol
C2H6(g)
229.6
ethane
C3H8(g)
269.9
propane
C3O2(l)
1811
C3O2(g)
276.4
C4H10(g)
310.1
n-butane
C4H8(g)
265.4
cyclobutane
C4N2(g)
290
C5H10(g)
292.9
cyclopentane
C5H10(l)
204.3
cyclopentane
C6H12(l)
204.3
cyclohexane
C6H12(g)
298.2
cyclohexane
C6H14(l)
296
n-hexane
C6H5CH3(l)
221
toluene
C6H5CH3(g)
320.7
toluene
C6H5COOH(s)
167.6
benzoic acid
C6H5OH(s)
144
phenol
C6H5OH(g)
315.6
phenol
C6H6(l)
173.3
benzene
C6H6(g)
269.2
benzene
C7H14(l)
242.5
cycloheptane
C8H16(l)
262
cyclooctane
C8H18(l)
361.2
n-octane
Ca(s)
41.6
Ca(l)
50.7
Ca(g)
154.8
Ca2+(aq)
-55.2
Ca(ClO4)2•4H2O(s)
433.5
Ca(H2PO4)2•H2O(s)
259.8
Ca(IO3)2(s)
230.1
Ca(IO3)2•6H2O(s)
451.9
Ca(NO3)2(s)
193.3
Ca(NO3)2•2H2O(s)
269.4
Ca(NO3)2•3H2O(s)
319.2
Ca(NO3)2•4H2O(s)
375.3
Ca(OH)2(s)
83.4
Ca[Mg(CO3)2(s)
155.2
dolomite
Ca10(PO4)6(OH)2(s)
780.7
hydroxyapatite
Ca10(PO4)6F2(s)
775.7
fluorapatite
Ca2P2O7(s)
189.2
beta
Ca2SiO4(s)
127.7
beta
Ca2SiO4(s)
120.8
gamma
Ca3(AsO4)2(s)
225.9
solid
Ca3(PO4)2(s)
236
beta
Ca3(PO4)2(s)
240.9
alpha
CaBr2(s)
129.7
CaBr2(l)
147.9
CaBr2(g)
314.6
CaBr2•6H2O(s)
410
CaC2(s)
70
CaC2O4•H2O(s)
156.5
CaCl2(s)
104.6
CaCO3(s)
88
aragonite
CaCO3(s)
91.7
calcite
CaF2(s)
68.5
CaH2(s)
41.4
CaI2(s)
142
CaO(s)
38.1
CaS(s)
56.5
CaSO4(s)
106.5
CBr4(s)
212.5
CBr4(g)
358.1
CCl2F2(g)
300.8
CCl2O(g)
283.5
CCl4(l)
216.4
CCl4(g)
309.9
Cd(s)
51.8
Cd(g)
167.7
Cd2+(aq)
−73.2
CdBr2(s)
137.2
CdCl2(s)
115.3
CdCO3(s)
92.5
CdF2(s)
77.4
CdO(s)
54.8
CdS(s)
64.9
CdSO4(s)
123
CF4(g)
261.6
CH3CHOHCH3(l)
180.6
2-propanol
CH3CHOHCH3(g)
309.9
2-propanol
CH3COCH3(l)
200.4
acetone
CH3COCH3(g)
294.9
acetone
CH3COOH(l)
159.8
acetic acid
CH3COOH(g)
282.5
acetic acid
CH3OCH3(g)
267.1
dimethyl ether
CH3OH(l)
127.2
methanol
CH3OH(g)
239.7
methanol
CH4(g)
186.3
methane
CHCl3(l)
201.7
CHCl3(g)
295.7
Cl(g)
165.1
Cl-(aq)
56.6
Cl2(g)
223.1
C2F6(g)
489.5
Cl2O(g)
266.2
ClF(g)
217.9
ClF3(g)
281.6
ClF5(g)
310.6
ClO(g)
226.6
ClO-(aq)
41.8
ClO2(g)
263.7
ClO2-(aq)
101.3
ClO3-(aq)
162.3
ClO4−(aq)
182
CNBr(g)
247.1
CNCl(g)
235.5
CNI(s)
128.9
CNI(g)
256.6
CO(g)
197.9
CO(NH2)2(s)
104.6
urea
Co(s)
30
Co(g)
179.5
Co2+(aq)
-113
Co3+(aq)
-305.4
Co(NH3)63+(aq)
146.4
Co(OH)2(s)
79.5
pink
Co3O4(s)
114.2
CoCl2(s)
109.2
CoCl2•2H2O(s)
188.3
CoCl2•6H2O(s)
343.1
CoCl3(g)
334.1
CoF2(s)
82
CoF3(s)
94.6
CoO(s)
53
CoSi(s)
43.1
CoSO4(s)
118
CoSO4•6H2O(s)
367.6
CoSO4•7H2O(s)
406.1
CO2(aq)
117.6
CO2(g)
213.8
CO32-(aq)
-53.1
COBr2(g)
309
COCl2(g)
283.5
COF2(g)
258.7
COS(g)
231.5
Cr(s)
23.8
Cr(l)
36.2
Cr(g)
174.5
Cr2N(s)
64.9
Cr2O3(s)
81.2
Cr2O3(l)
125.6
Cr2O72-(aq)
261.9
Cr3C2(s)
85.4
Cr7C3(s)
200.8
CrCl2(s)
115.3
CrCl3(s)
123
CrF3(s)
93.9
CrN(s)
37.7
CrN(g)
230.5
CrO(g)
239.2
CrO2(g)
269.1
CrO2Cl2(l)
221.8
CrO2Cl2(g)
329.7
CrO3(g)
266.2
CrO42-(aq)
50.2
Cs(s)
85.2
Cs(l)
92.1
Cs(g)
175.6
Cs+(aq)
169.7
CS(g)
210.5
CS2(l)
151.3
CS2(g)
237.8
Cs2O(g)
318
CsAl(SO4) 2•12H2O(s)
686.2
CsBr(s)
113.4
CsCl(s)
101.2
CsCl(l)
101.7
CsCl(g)
256
CsF(s)
88.3
CsF(l)
90.1
CsF(g)
243.1
CsH(g)
214.4
CsI(s)
125.5
CsOH(s)
98.7
CsOH(l)
118.4
CsOH(g)
255.1
Cu(s)
33.1
Cu(g)
166.4
Cu+(aq)
40.6
Cu2+(aq)
-99.6
Cu(C2O4)22-(aq)
146.4
Cu(NH3)22+(aq)
111.3
Cu(NH3)32+(aq)
199.6
Cu(NH3)42+(aq)
273.6
Cu2O(s)
93.1
Cu2S(s)
120.9
CuBr(s)
96.1
CuCl(s)
86.2
CuCl2(s)
108.1
CuCl2•2H2O(s)
167.4
CuCN(s)
84.5
CuCO3•Cu(OH)2(s)
186.2
malachite
CuF(s)
64.9
CuF2(s)
68.6
CuFe2O4(s)
141
CuFeO2(s)
88.7
CuI(s)
96.7
CuN3(s)
100.4
CuO(s)
42.6
CuS(s)
66.5
CuSO4(s)
109.2
CuSO4•H2O(s)
146
CuSO4•3H2O(s)
221.3
CuSO4•5H2O(s)
300.4
F(g)
158.7
F-(aq)
-13.8
F-(g)
145.5
F2(g)
202.8
F2O(g)
247.5
FB(g)
200.5
Fe(s)
27.3
alpha
Fe(l)
34.3
Fe(g)
180.5
Fe2+(aq)
-137.7
Fe3+(aq)
-315.9
Fe(CN)63-(aq)
270.3
Fe(CN)64-(aq)
95
Fe(CO)5(l)
338.1
Fe(CO)5(g)
445.2
Fe(OH)2+(aq)
-142.3
Fe(OH)3(s)
106.7
Fe2(SO4)3(s)
307.5
Fe2O3(s)
87.4
hematite
Fe2SiO4(s)
145.2
fayalite
Fe3C(s)
104.6
Fe3O4(s)
146.4
magnetite
Fe3Si(s)
103.8
Fe4N(s)
156.1
Fe7S8(s)
485.8
pyrrhotite
FeAl2O4(s)
106.3
FeAsS(s)
121.3
FeBr2(s)
140.6
FeCl2(s)
118
FeCl3(s)
142.3
FeCO3(s)
92.9
FeCr2O4(s)
146
FeF2(s)
87
FeF3(s)
98.3
FeI2(s)
167.4
FeMoO4(s)
129.3
FeO(s)
60.7
FeOH+(aq)
-29.3
FePO4•2H2O(s)
171.3
strengite
FeS(s)
60.3
pyrrhotite
FeS2(s)
52.9
pyrite
FeSi(s)
46
FeSi2(s)
55.6
beta-lebanite
FeSO4(s)
120.9
FeSO4•7H2O(s)
409.2
FeWO4(s)
131.8
FNO3(g)
73.6
FO(g)
216.4
H(g)
114.7
H+(aq)
0
H2(g)
130.7
H2AsO4-(aq)
117.2
H2CO3(aq)
191
H2CS3(l)
223
H2MoO4(g)
355.6
H2O(l)
69.9
H2O(g)
188.8
H2O2(l)
109.6
H2O2(g)
232.7
H2PO4-(aq)
90.4
H2S(g)
205.8
H2Se(g)
219
H2SiO3(s)
133.9
H2SO4(l)
156.9
H2SO4(g)
289.1
H2SO4(aq)
20.1
H2VO4-(aq)
121.3
H2WO4(s)
146.4
H2WO4(g)
351.5
H3BO3(s)
88.8
H3PO4(s)
110.5
H3PO4(l)
150.8
H4SiO4(s)
192.5
HAsO42-(aq)
-1.7
HBO2(s)
37.7
monoclinic
HBO2(s)
50.2
orthorhombic
HBr(g)
198.7
HBr(aq)
82.4
HCl(g)
186.9
HCl(aq)
56.5
HClO(g)
236.6
HCN(l)
112.8
HCN(g)
201.8
HCO2-(aq)
91.6
HCO2H(aq)
164
HCO3-(aq)
95
HF(aq)
-13.8
HF(g)
173.8
He(g)
126.2
Hg(CH3)2(g)
305.4
Hg(l)
75.9
Hg(g)
175
Hg2+(aq)
−32.2
Hg2(g)
288.1
Hg2Br2(s)
218
Hg2Cl2(s)
191.6
Hg2CO3
179.9
Hg2F2(s)
159
Hg2I2(s)
233.5
Hg2(N3)2
205
Hg2SO4(s)
200.7
HgBr2(s)
172
HgCl(g)
259.8
HgCl2(s)
146
HgF2(s)
116.3
HgH(g)
219.5
HgI(g)
281.4
HgI2(s)
180
HgI2(g)
336
HgO(s)
71.1
yellow
HgO(s)
71.1
red-hexagonal
HgO(s)
70.3
red-orthorhombic
HgS(s)
88.3
black
HgS(s)
82.4
red
HgSe(s)
94.1
HgSe(g)
267
HgTe(s)
106.7
HI(g)
206.6
HI(aq)
111.3
HIO3(s)
0
HN3(g)
238.9
HNCO(g)
238.1
HNCS(g)
247.7
HNO2(g)
174.8
HNO3(l)
155.6
HNO3(g)
266.4
HNO3(aq)
146.4
HOF(g)
226.6
HPO42-(aq)
-33.5
HS-(aq)
62.8
HSe-(aq)
-664.8
HSeO4-(aq)
149.4
HSO3-(aq)
139.7
HSO3F(g)
297.1
HSO4-(aq)
131.8
HVO42-(aq)
16.7
I(g)
180.8
I-(aq)
111.3
I2(s)
116.1
I2(g)
260.7
IBr(g)
258.8
ICl(l)
135.1
ICl(g)
247.6
ICl3(s)
167.4
IF(g)
236.2
IF5(g)
334.7
IF7(g)
346.4
IO(g)
245.4
IO-(aq)
-5.4
IO3-(aq)
118.4
K(s)
64.7
K(l)
71.5
K(g)
160.3
K+(aq)
102.5
K2B4O7(s)
208.4
K2CO3(s)
155.5
K2O(s)
94.1
K2O2(s)
102.1
K2SiO3(s)
146.1
K2SO4(s)
175.6
K3AlCl6(s)
376.6
KAl(SO4)2
204.6
KAl(SO4)2•12H2O
687.4
KAlCl4(s)
196.6
KBF4(s)
133.9
KBH4(s)
106.6
KBO2(s)
80
KBr(s)
95.9
KBrO3(s)
149.2
KCl(s)
82.6
KCl(g)
239.5
KClO3(s)
143.1
KClO4(s)
151
KCN(s)
127.8
KF(s)
66.6
KF•2H2O(s)
150.6
KH(s)
50.2
KH2(s)
104.3
KH2AsO4(s)
155.1
KI(s)
106.3
KIO3(s)
151.5
KMnO4(s)
171.7
KNO2(s)
152.1
KNO3(s)
133.1
KO2(s)
122.6
KOH(s)
78.9
KOH(aq)
91.6
Kr(g)
164.1
KSCN(s)
124.3
Li(s)
29.1
Li(g)
138.8
Li+(aq)
12.4
Li2B4O7(s)
155.6
Li2BeF4(s)
130.5
Li2CO3(s)
90.2
Li2O(s)
37.9
Li2O2(s)
56.5
LiBr(s)
74.3
LiCl(s)
59.3
LiF(s)
35.7
LiI(s)
86.8
LiNO3(s)
90
LiOH(aq)
2.8
LiOH(s)
42.8
Mg(s)
32.7
Mg(g)
148.6
Mg2+(aq)
−138.1
Mg(OH)2(s)
63.2
MgBr2(s)
117.2
MgCl2(s)
89.6
MgCl2•6H2O(s)
179.9
MgCO3(s)
65.7
MgCr2O4(s)
106
MgF2(s)
57.2
MgFe2O4(s)
123.8
MgH2(s)
31.1
MgI2(s)
129.7
MgMoO4(s)
118.8
MgO(s)
26.9
MgS(s)
50.3
MgSiO3(s)
67.8
clinoenstatite
MgSO4(s)
91.6
MgSO4•H2O(s)
126.4
MgSO4•6H2O(s)
348.1
MgSO4•7H2O(s)
372.4
MgTi2O5(s)
127.3
MgTiO3(s)
74.6
MgWO4(s)
101.2
Mn(s)
32
Mn(g)
173.6
Mn2+(aq)
-73.6
Mn(IO3)2
263.6
Mn(OH)2(s)
99.2
amorphous
Mn2O3(s)
110.5
Mn2SiO4(s)
163.2
Mn3C(s)
98.7
Mn3O4(s)
155.6
MnC2O4•2H2O(s)
200.8
MnCl2(s)
118.2
MnCl2•H2O(s)
174.1
MnCl2•2H2O(s)
218.8
MnCl2•4H2O(s)
303.3
MnCO3(s)
85.8
natural
MnCO3(s)
113
precipitated
MnF2(s)
-748.9
MnO(s)
59.7
MnO2(s)
53.1
MnO4-(aq)
191.2
MnS(s)
78.2
MnSe(s)
90.8
MnSiO3(s)
89.1
MnSO4(s)
112.1
Mo(s)
28.7
Mo(g)
182
MoO2(s)
46.3
MoO3(s)
77.7
MoS2(s)
62.6
MoS3(s)
119
N(g)
153.3
N2(g)
191.6
(NH4)2O(l)
267.5
(NH4)2SiF6(s)
280.2
hexagonal
(NH4)2SO4(s)
220.1
N2F2(g)
262.5
trans
N2F2(g)
259.8
cis
N2H2(g)
220.1
trans
N2H2(g)
218.4
cis, diimide
N2H4(l)
121.2
N2H4(g)
238.5
N2O(g)
220
N2O2(g)
287.5
N2O3(g)
312.2
N2O4(s)
150.3
N2O4(l)
209.2
N2O4(g)
304.2
N2O5(s)
347.2
N3-(aq)
107.9
Na(s)
51.2
Na(l)
57.9
Na(g)
153.7
Na+(aq)
58.5
Na2B4O7(s)
189.5
Na2CO3(s)
135
Na2O(s)
75.1
Na2O2(s)
94.8
Na2S(s)
97.9
Na2SiO3(s)
113.8
Na2SO3(s)
146
Na2SO4(s)
149.6
Na2SO4•10H2O(s)
592.9
Na2WO4(s)
160.2
Na3AlCl6(s)
347.3
Na3AlF6(s)
238.5
cryolite
Na3AlF6(l)
286.6
NaAlCl4(s)
188.3
NaAlO2(s)
70.4
NaBH4(s)
101.4
NaBO2(s)
73.5
NaBr(s)
86.8
NaBr(g)
241.2
NaBr(aq)
141.4
NaCl(s)
72.1
NaCl(g)
229.8
NaCl(aq)
115.5
NaClO4(s)
142.3
NaCN(s)
115.6
NaF(s)
51.2
NaF(aq)
45.2
NaH(g)
188
NaH(s)
40
NaHCO3(s)
102.1
NaI(s)
98.3
NaN3(s)
96.9
NaNO3(s)
116.5
NaNO3(aq)
205.4
NaOH(s)
64.4
NaOH(l)
75.9
NaOH(aq)
48.1
NaOH•H2O(s)
84.5
Ne(g)
146.3
NF3(g)
260.8
NH(g)
181.1
imidogen
NH2(g)
194.6
amidogen
NH3(aq)
111
NH3(g)
192.3
NH4+(aq)
111.2
NH4Al(SO4)2(s)
216.3
NH4Br(s)
113
NH4Cl(s)
94.6
NH4Cl(aq)
169.9
NH4ClO4(s)
184.2
NH4F(s)
72
NH4H2AsO4(s)
172
NH4H2PO4(s)
152
NH4HCO3(s)
120.9
NH4HF2(s)
115.5
NH4HS(s)
97.5
NH4HSe(s)
96.7
NH4I(s)
117.2
NH4N3(s)
112.5
NH4NO3(s)
151.1
NH4NO3(aq)
259.8
NH4OH(l)
165.6
NH4ReO4(s)
232.6
NH4VO3(s)
140.6
Ni(CN)42-(aq)
217.6
Ni(CO)4(l)
313.4
Ni(CO)4(g)
410.5
Ni(g)
182.2
Ni(IO3)2(s)
213.4
Ni(OH)2(s)
88
Ni(s)
29.9
Ni2+(aq)
-128.9
Ni2O3(s)
0
Ni3S2(s)
133.9
NiCl2(s)
97.7
NiCl2•2H2O(s)
175.7
NiCl2•4H2O(s)
242.7
NiCl2•6H2O(s)
344.3
NiF2(s)
73.6
NiO(s)
38
NiS(s)
53
NiSO4(s)
97.1
NiSO4•6H2O(s)
332.2
tetrahedral
NiSO4•7H2O(s)
378.9
NO(g)
210.8
NO2(g)
240.1
NO2-(aq)
140.2
NO2Cl(g)
272
NO2F(g)
260.2
NO3(g)
252.5
NO3-(aq)
146.4
NOBr(g)
273.5
NOCl(g)
261.7
NOF(g)
248
NOF3(g)
278.4
O(g)
161.1
O2(g)
205.1
O2F2(g)
268.1
O3(g)
238.9
OCN-(aq)
106.7
OF(g)
217.7
OF2(g)
247.3
OH-(aq)
-10.9
Os(s)
32.6
Os(g)
192.6
OsO4(s)
143.9
OsO4(g)
293.8
P(s)
22.8
red
P(s)
41.1
white
P(l)
42.9
red V
P(g)
163.1
red V
P2(g)
218.1
P4(s)
91.2
red
P4(s)
164.4
white
P4(g)
280
P2H4(l)
167.4
P2O74-(aq)
-117.2
P4O10(s)
228.9
P4S3(s)
200.8
P4S3(l)
207.1
P4S3(g)
319.2
Pb(s)
64.8
Pb(l)
71.7
Pb(g)
175.3
Pb2+(aq)
10.5
Pb(IO3)2(s)
313
Pb(N3)2(s)
148.1
monoclinic
Pb(N3)2(s)
149.4
orthorhombic
Pb(NO3)2(aq)
303.3
Pb(ReO4)2•2H2O
309.6
Pb2SiO4(s)
187
Pb3(PO4)2(s)
353.1
Pb3O4(s)
212.1
PbB2O4(s)
130.5
PbB4O7(s)
166.9
PbBr2(s)
161.1
PbBr2(l)
173.9
PbBr2(g)
339.3
PbBr4(g)
426.1
PbC2O4(s)
146
PbCl2(s)
136
PbCl2(l)
153.2
PbCl2(g)
317.1
PbCl4(g)
381.5
PbClF(s)
121.8
PbCO3(s)
131
PbF2(s)
113
alpha
PbF2(s)
114.4
beta
PbF4(g)
333.5
PbI2(s)
174.8
PbI2(l)
198.9
PbI4(g)
466.1
PbO(s)
66.5
red
PbO•PbCO3(s)
204.2
PbO2(s)
68.6
PBr3(l)
240.2
PBr3(g)
348
PbS(s)
91.2
PbSe(s)
102.5
PbSeO4(s)
167.8
PbSiO3(s)
110
PbSiO4(s)
84
PbSO4(s)
148.5
PbTe(s)
110
PCl3(l)
217.1
PCl3(g)
311.8
PCl5(g)
364.6
PF3(g)
273.1
PF5(g)
300.8
PH3(g)
310.2
PH4Br(s)
110
PH4I(s)
123
PN(g)
211.1
Po(g)
188.8
PO43-(aq)
-221.8
POBr3(g)
359.7
POCl2F(g)
320.3
POCl3(g)
325.3
POCl3(l)
222.5
POCl3(g)
325.5
POClF2(g)
301.6
POF3(g)
285.3
PSBr3(g)
372.7
PSCl3(g)
337.2
PSF3(g)
298
Ra(s)
71.1
Ra(g)
176.4
Ra(IO3)2(s)
272
Ra(NO3)2(s)
221.8
RaCl2•2H2O(s)
213.4
RaSO4(s)
138.1
Rb(s)
76.8
Rb(g)
170.1
RbBr(s)
104.9
RbCl(s)
95.9
RbClO3(s)
151.9
RbClO4(s)
160.7
RbI(s)
118
Rn(g)
176.1
S(s)
31.9
rhombic
S(l)
35.1
S(g)
167.7
S2-(aq)
-14.6
S2(g)
228.1
S8(g)
430.2
S2Cl2(g)
331.5
Se(s)
42.4
Se(g)
176.7
SF2Cl(g)
319.1
SF4(g)
291.1
SF6(g)
291.8
Si(s)
18.8
Si(g)
168
Si2(g)
229.8
Si2H6(g)
272.5
Si3N4(s)
113
SiBr4(g)
377.8
SiBr4(l)
277.8
SiC(s)
16.6
SiC(g)
236.6
SiCl2(g)
280.3
SiCl4(g)
330.6
SiCl4(l)
239.7
SiF(g)
225.7
SiF2(g)
256.8
SiF4(g)
282.5
SiH3Cl(g)
250.5
SiH3F(g)
238.3
SiH4(g)
204.6
SiHCl3(l)
227.6
SiN(g)
216.6
SiO2(s)
42.7
cristobalite
SiO2(s)
41.8
quartz
SiO2(s)
46.9
amorphous
SiO2(s)
43.5
tridymite
SiOF2(g)
271.2
SiS(g)
223.6
SiS2(s)
80.3
Sn(s)
51.5
white
Sn(s)
44.1
gray
Sn2+(aq)
−17.4
SnBr4(s)
264.4
SnBr4(g)
411.8
SnCl4(l)
258.6
SnCl4(g)
365.8
SnH4(g)
227.6
SnO(s)
56.5
SnO2(s)
52.3
SnS(s)
77
SO(g)
221.8
SO2(g)
248.2
SO2Cl2(g)
311.8
SO2F2(g)
283.9
SO3(s)
52.3
beta
SO3(l)
95.6
SO3(g)
256.8
SO32-(aq)
-29.3
SO42-(aq)
18.5
SOCl2(g)
309.8
SOCl2(g)
309.8
Sr(s)
52.3
Sr(l)
57.2
Sr(g)
164.5
Sr(BrO3)2•H2O(s)
280.3
Sr(IO3)2(s)
234.3
Sr(IO3)2•6H2O(s)
456.1
Sr(NO3)2(s)
194.6
Sr(NO3)2•4H2O(s)
369
Sr2SiO4(s)
153.1
Sr2TiO4(s)
159
Sr3(AsO4) 2(s)
255.2
SrBr2(s)
143.4
SrBr2•6H2O(s)
405.8
SrCl2(s)
114.9
SrCl2•2H2O(s)
217.6
SrCl2•6H2O(s)
390.8
SrCO3(s)
97.1
strontianite
SrF2(s)
82.1
SrHPO4(s)
121.4
SrI2(s)
159.1
SrO(s)
55.5
SrS(s)
68.2
SrSiO3(s)
96.7
SrSO4(s)
117.6
SrTiO3(s)
108.8
SrWO4(s)
138.1
SrZrO3(s)
115.1
Ti(s)
30.7
Ti(g)
180.3
Ti2O3(s)
78.8
Ti3O5(s)
129.3
alpha
Ti4O7(s)
198.7
TiB(s)
34.7
TiB2(s)
28.5
TiCl4(s)
208.8
TiBr2(s)
108.4
TiBr3(s)
176.4
TiBr4(s)
243.6
TiBr4(l)
284.2
TiBr4(g)
398.9
TiC(s)
24.2
TiCl2(s)
87.4
TiCl3(s)
139.7
TiCl4(l)
252.3
TiCl4(g)
354.9
TiF2(g)
255.2
TiF3(s)
87.9
TiF4(s)
134
TiF4(g)
314.6
TiH2(s)
29.7
TiI2(s)
121.3
TiI3(s)
192.5
TiI4(s)
246
TiI4(l)
311.8
TiN(s)
30.3
TiO(s)
34.8
alpha
TiO2(s)
50.3
rutile
TiO2(s)
49.9
anatase
TiOCl2(g)
320.9
TiOF2(g)
284.6
U(s)
50.2
U(g)
199.8
U2N3(s)
121.3
UBr3(s)
205
UBr4(s)
234.3
UCl3(s)
159
UCl4(s)
198.3
UCl5(s)
242.7
UCl6(s)
285.8
UF3(s)
117.2
UF4(s)
151
UF4(g)
368
UF5(s)
197.9
UF6(s)
227.6
UF6(g)
377.9
UH3(s)
63.9
UI3(s)
234.3
UI4(s)
280.3
UICl3(s)
225.9
UN(s)
62.3
UO2(s)
77
UO2(g)
274.6
UO2(NO3)2(s)
276.1
UO2(NO3)2•2H2O(s)
355.6
UO2(NO3)2•3H2O(s)
393.3
UO2(NO3)2•6H2O(s)
505.6
UO2(NO3)2•H2O(s)
318
UO2SO4•3H2O(s)
263.6
UO3(s)
98.6
V(s)
28.9
V(g)
182.3
V2O5(s)
131
VCl3(s)
131
VCl4(l)
255
VCl4(g)
362.4
W(s)
32.7
W(l)
45.7
W(g)
173.8
W3O8(g)
493.7
WBr5(s)
272
WBr6(s)
313.8
WCl2(s)
130.5
WCl4(s)
198.3
WCl5(s)
217.6
WCl6(s)
238.5
WF6(l)
249.4
WF6(g)
347.7
WO2(s)
50.5
WO2Cl2(s)
200.8
WO3(s)
75.9
WOCl4(s)
172.8
WOCl4(g)
377
WOF4(g)
334.7
Xe(g)
169.7
Zn(ClO4)2•6H2O
545.6
Zn(s)
41.6
Zn(g)
161
Zn2+(aq)
−112.1
Zn(NO3)2(s)
Zn(NO3)2•6H2O(s)
456.9
Zn(OH)2(s)
81.2
beta
Zn(OH)2(s)
81.6
epsilon
Zn2SiO4(s)
-1523.2
ZnBr2(s)
138.5
ZnBr2•2H2O(s)
198.7
ZnC2O4•2H2O(s)
195.4
ZnCl2(s)
111.5
ZnCO3(s)
82.4
ZnF2(s)
73.7
ZnI2(s)
161.1
ZnO(s)
43.6
ZnS(s)
57.7
sphalerite
ZnSe(s)
83.7
ZnSeO3•H2O(s)
163.2
ZnSO4(s)
110.5
ZnSO4•H2O(s)
138.5
ZnSO4•6H2O(s)
363.6
ZnSO4•7H2O(s)
388.7
Zr(s)
39
Zr(g)
181.4
ZrCl2(s)
110
ZrCl4(s)
181.6