Standard Heat of Formation Values
Standard heat of formation values indicate the enthalpy change for forming one mole of a substance in the standard state (T=298.15 K, P = 1 atm) from its pure elements. Learn more on our Tutorial page.
Substance to the change in heat of formation in kilo joules per mole. This is a searchable table, search for the substance (no spaces) with any sub or superscript values simply typed in line. Keep in mind that some may have parenthesis for grouping, such as Al(OH)3, you will need to type the parenthesis in your search.
Substance
\(\text{δH}_f (\unit{\kilo\joule\per\mole})\)
\(\eAg\msg\)
284.9
\(\eAg\mss\)
0
\(\eAg^{+}\msaq\)
105.8
\(\eAg_2\eC\eO_3\mss\)
-505.8
\(\eAg_2\eO\mss\)
-31.1
\(\eAg_2\eS\mss\)
-32.6
\(\eAg\eBr\mss\)
-100.4
\(\eAg\eCl\mss\)
-127
\(\eAg\eC\eN\mss\)
146
\(\eAg\eF\mss\)
-204.6
\(\eAg\eI\mss\)
-61.8
\(\eAg\eN\eO_3\mss\)
-124.4
\(\eAl\msg\)
330
\(\eAl(\eO\eH)_3\mss\)
-1277
\(\eAl(\eO\eH)_4^{-}\msaq\)
-1490
\(\eAl\mss\)
0
\(\eAl_2\eO_3\mss\)
-1675.7
\(\eAl\eBr_3\mss\)
-527.2
\(\eAl\eCl_3\mss\)
-704.5
\(\eAl\eF_3\mss\)
-1510.4
\(\eAl\eI_3\mss\)
-302.9
\(\eAl\eP\eO_4\mss\)
-1733.8
\(\eAr\msg\)
0
\(\eB\msg\)
565
\(\eB\mss\)
0
\(\eB_2\eS_3\mss\)
-240.6
\(\eBa\msg\)
180
\(\eBa\mss\)
0
\(\eBa\eBr_2\mss\)
-757.3
\(\eBa\eCl_2\mss\)
-855
\(\eBa\eC\eO_3\mss\)
-1213
\(\eBa\eF_2\mss\)
-1207.1
\(\eBa\eH_2\mss\)
-177
\(\eBa\eI_2\mss\)
-602.1
\(\eBa\eO\mss\)
-548
\(\eBa\eS\eO_4\mss\)
-1473.2
\(\eBe\msg\)
324
\(\eBe(\eO\eH)_2\mss\)
-902.5
\(\eBe\mss\)
0
\(\eBe\eBr_2\mss\)
-353.5
\(\eBe\eCl_2\mss\)
-490.4
\(\eBe\eF_2\mss\)
-1026.8
\(\eBe\eI_2\mss\)
-192.5
\(\eBe\eO\mss\)
-609.4
\(\eBe\eS\eO_4\mss\)
-1205.2
\(\eB\eH\msg\)
442.7
\(\eB\eH_3\msg\)
89.2
\(\eBi\msg\)
207.1
\(\eBi\mss\)
0
\(\eBi_2\eO_3\mss\)
-573.9
\(\eBi\eCl_3\mss\)
-379.1
\(\eBr^{-}\msaq\)
-121.4
\(\eBr\msg\)
111.9
\(\eBr_2\msg\)
30.9
\(\eBr_2\msl\)
0
\(\eBr\eCl\msg\)
14.6
\(\eBr\eF\msg\)
-93.8
\(\eBr\eF_3\msg\)
-1136
\(\eC\msg\)
716.7
\(\eC\mss(\text{diamond})\)
1.9
\(\eC\mss(\text{graphite})\)
0
\(\eCa\msg\)
177.8
\(\eCa(\eO\eH)_2\mss\)
-985.2
\(\eCa\mss\)
0
\(\eCa\eCl_2\mss\)
-795.4
\(\eCa\eC\eN\mss\)
-184.5
\(\eCa\eC\eO_3\mss(\text{aragonite})\)
-1207.8
\(\eCa\eC\eO_3\mss(\text{calcite})\)
-1207.6
\(\eCa\eF_2\mss\)
-1228
\(\eCa\eH_2\mss\)
-181.5
\(\eCa\eI_2\mss\)
-533.5
\(\eCa\eO\mss\)
-634.9
\(\eCa\eS\eO_4\mss\)
-1434.5
\(\eC\eBr_4\msg\)
83.9
\(\eC\eBr_4\mss\)
29.4
\(\eC\eCl_2\eF_2\msg\)
-477.4
\(\eC\eCl_2\eO\msg\)
-219.1
\(\eC\eCl_4\msg\)
-95.7
\(\eC\eCl_4\msl\)
-128.2
\(\eCd\msg\)
111.8
\(\eCd\mss\)
0
\(\eCd\eBr_2\mss\)
-316.2
\(\eCd\eCl_2\mss\)
-391.5
\(\eCd\eC\eO_3\mss\)
-750.6
\(\eCd\eF_2\mss\)
-700.4
\(\eCd\eS\mss\)
-161.9
\(\eCd\eS\eO_4\mss\)
-933.3
\(\eC\eF_4\msg\)
-933.6
\(\eCl^{-}\msaq\)
-167.1
\(\eCl\msg\)
121.3
\(\eCl_2\msg\)
0
\(\eCl_2\eO\msg\)
80.3
\(\eCl\eF\msg\)
-50.3
\(\eCl\eF_3\msg\)
-163.2
\(\eCl\eO_2\msg\)
89.1
\(\eC\eO\msg\)
-110.5
\(\eCo\msg\)
424.7
\(\eCo\mss\)
0
\(\eC\eO_2\msg\)
-393.5
\(\eCo\eCl_2\mss\)
-312.5
\(\eCr\msg\)
396.6
\(\eCr\mss\)
0
\(\eCr_2\eO_3\mss\)
-1139.7
\(\eCr\eCl_2\mss\)
-395.4
\(\eCr\eCl_3\mss\)
-556.5
\(\eCr\eO_2\msg\)
-598
\(\eCr\eO_3\msg\)
-292.9
\(\eCs\msg\)
76.5
\(\eCs\mss\)
0
\(\eC\eS_2\msg\)
116.7
\(\eC\eS_2\msl\)
89
\(\eCs\eCl\mss\)
-443
\(\eCu\msg\)
337.4
\(\eCu\mss\)
0
\(\eCu_2\eO\mss\)
-168.6
\(\eCu_2\eS\mss\)
-79.5
\(\eCu\eBr\mss\)
-104.6
\(\eCu\eBr_2\mss\)
-141.8
\(\eCu\eCl\mss\)
-137.2
\(\eCu\eCl_2\mss\)
-220.1
\(\eCu\eC\eN\mss\)
96.2
\(\eCu\eO\mss\)
-157.3
\(\eCu\eS\mss\)
-53.1
\(\eCu\eS\eO_4\mss\)
-771.4
\(\eF^{-}\msaq\)
-335.4
\(\eF\msg\)
79.4
\(\eF_2\msg\)
0
\(\eF_2\eO\msg\)
24.5
\(\eF\eB\msg\)
-122.2
\(\eFe\msg\)
416.3
\(\eFe\mss\)
0
\(\eFe^{2+}\msaq\)
-89.1
\(\eFe_2\eO_3\mss\)
-824.2
\(\eFe^{3+}\msaq\)
-48.5
\(\eFe_3\eC\mss\)
25.1
\(\eFe_3\eO_4\mss\)
-1118.4
\(\eFe\eBr_2\mss\)
-249.8
\(\eFe\eBr_3\mss\)
-268.2
\(\eFe\eCl_2\mss\)
-341.8
\(\eFe\eCl_3\mss\)
-399.5
\(\eFe\eC\eO_3\mss\)
-740.6
\(\eFe\eO\mss\)
-272
\(\eFe\eS_2\mss\)
-178.2
\(\eF\eO\msg\)
109
\(\eH\msg\)
218
\(\eH^{+}\msaq\)
0
\(\eH_2\msg\)
0
\(\eH_2\eO\msg\)
-241.8
\(\eH_2\eO\msl\)
-285.8
\(\eH_2\eO_2\msg\)
-136.3
\(\eH_2\eO_2\msl\)
-187.8
\(\eH_2\eS\msg\)
-20.6
\(\eH_2\eSe\msg\)
29.7
\(\eH_2\eS\eO_4\msaq\)
-909.3
\(\eH_2\eS\eO_4\msl\)
-814
\(\eH_3\eP\eO_4\msl\)
-1271.7
\(\eH_3\eP\eO_4\mss\)
-1284.4
\(\eH\eBr\msaq\)
-121.6
\(\eH\eBr\msg\)
-36.3
\(\eH\eCl\msaq\)
-167.2
\(\eH\eCl\msg\)
-92.3
\(\eH\eC\eN\msg\)
135.1
\(\eH\eC\eN\msl\)
108.9
\(\eHe\msg\)
0
\(\eH\eF\msaq\)
-332.6
\(\eH\eF\msg\)
-273.3
\(\eHg\msg\)
61.4
\(\eHg\msl\)
0
\(\eHg_2\msg\)
108.8
\(\eHg_2\eBr_2\mss\)
-206.9
\(\eHg_2\eCl_2\mss\)
-265.4
\(\eHg_2\eI_2\mss\)
-121.3
\(\eHg_2\eS\eO_4\mss\)
-743.1
\(\eHg\eBr_2\mss\)
-170.7
\(\eHg\eCl_2\mss\)
-224.3
\(\eHg\eI_2\mss\)
-105.4
\(\eHg\eO\mss\)
-90.8
\(\eHg\eS(s, red)\)
-58.2
\(\eHg\eS\eO_4\mss\)
-707.5
\(\eH\eI\msaq\)
-55.2
\(\eH\eI\msg\)
26.5
\(\eH\eI\eO_3\mss\)
-230.1
\(\eH\eN\eO_2\msg\)
-79.5
\(\eH\eN\eO_3\msaq\)
-207.4
\(\eH\eN\eO_3\msg\)
-133.9
\(\eH\eN\eO_3\msl\)
-174.1
\(\eI^{-}\msaq\)
-56.8
\(\eI\msg\)
106.8
\(\eI_2\msg\)
62.4
\(\eI_2\mss\)
0
\(\eI\eBr\msg\)
40.8
\(\eI\eCl\msg\)
17.8
\(\eI\eF\msg\)
-95.7
\(\eK\msg\)
89
\(\eK\mss\)
0
\(\eK_2\eC\eO_3\mss\)
-1151
\(\eK_2\eO\mss\)
-361.5
\(\eK_2\eO_2\mss\)
-494.1
\(\eK_2\eS\eO_4\mss\)
-1437.8
\(\eK\eBr\mss\)
-393.8
\(\eK\eCl\mss\)
-436.5
\(\eK\eCl\eO_3\mss\)
-397.7
\(\eK\eF\mss\)
-567.3
\(\eK\eI\mss\)
-327.9
\(\eK\eMn\eO_4\mss\)
-837.2
\(\eK\eN\eO_2\mss\)
-369.8
\(\eK\eN\eO_3\mss\)
-494.6
\(\eKr\msg\)
0
\(\eK\eS\eC\eN\mss\)
-200.2
\(\eLi\msg\)
159.3
\(\eLi\mss\)
0
\(\eLi^{+}\msaq\)
-278.5
\(\eLi_2\eO\mss\)
-597.9
\(\eLi\eBr\mss\)
-351.2
\(\eLi\eCl\mss\)
-408.6
\(\eLi\eF\mss\)
-616
\(\eLi\eI\mss\)
-270.4
\(\eLi\eN\eO_3\mss\)
-483.1
\(\eLi\eO\eH\mss\)
-487.5
\(\eMg\msg\)
147.1
\(\eMg(\eO\eH)_2\mss\)
-924.5
\(\eMg\mss\)
0
\(\eMg\eBr_2\mss\)
-524.3
\(\eMg\eCl_2\mss\)
-641.3
\(\eMg\eF_2\mss\)
-1124.2
\(\eMg\eO\mss\)
-601.6
\(\eMg\eS\mss\)
-346
\(\eMg\eS\eO_4\mss\)
-1284.9
\(\eMn\msg\)
280.7
\(\eMn\mss\)
0
\(\eMn\eBr_2\mss\)
-384.9
\(\eMn\eCl_2\mss\)
-481.3
\(\eMn\eO\mss\)
-385.2
\(\eMn\eO_2\mss\)
-520
\(\eMn\eO_4^{-}\msaq\)
-541.4
\(\eMo\msg\)
658.1
\(\eMo\mss\)
0
\(\eMo\eO_2\mss\)
-588.9
\(\eMo\eO_3\mss\)
-745.1
\(\eMo\eS_2\mss\)
-235.1
\(\eMo\eS_3\mss\)
-364
\(\eN\msg\)
472.7
\(\eN_2\msg\)
0
\(\eN_2\eH_4\msg\)
95.4
\(\eN_2\eH_4\msl\)
50.6
\(\eN_2\eO\msg\)
81.6
\(\eN_2\eO_4\msg\)
11.1
\(\eN_2\eO_4\msl\)
-19.5
\(\eNa\msg\)
107.5
\(\eNa\mss\)
0
\(\eNa^{+}\msaq\)
-240.2
\(\eNa_2\eC\eO_3\mss\)
-1130.7
\(\eNa_2\eO\mss\)
-414.2
\(\eNa_2\eO_2\mss\)
-510.9
\(\eNa_2\eS\eO_4\mss\)
-1387.1
\(\eNa\eBr\msaq\)
-361.7
\(\eNa\eBr\msg\)
-143.1
\(\eNa\eBr\mss\)
-361.1
\(\eNa\eCl\msaq\)
-407.3
\(\eNa\eCl\mss\)
-411.2
\(\eNa\eC\eN\mss\)
-87.5
\(\eNa\eF\msaq\)
-572.8
\(\eNa\eF\mss\)
-576.6
\(\eNa\eH\mss\)
-56.3
\(\eNa\eN_3\mss\)
21.7
\(\eNa\eN\eO_3\msaq\)
-447.5
\(\eNa\eN\eO_3\mss\)
-467.9
\(\eNa\eO_2\mss\)
-260.2
\(\eNa\eO\eH\mss\)
-425.8
\(\eNe\msg\)
0
\(\eN\eF_3\msg\)
-132.1
\(\eN\eH_3\msg\)
-45.9
\(\eN\eH_4^{+}\msaq\)
-133.3
\(\eN\eH_4\eCl\mss\)
-314.4
\(\eN\eH_4\eN\eO_3\mss\)
-365.6
\(\eN\eH_4\eO\eH\msl\)
-361.2
\((\eN\eH_4)_2\eS\eO_4\mss\)
-1180.9
\(\eNi\msg\)
429.7
\(\eNi(\eO\eH)_2\mss\)
-529.7
\(\eNi\mss\)
0
\(\eNi_2\eO_3\mss\)
-489.5
\(\eNi\eBr_2\mss\)
-212.1
\(\eNi\eCl_2\mss\)
-305.3
\(\eNi\eF_2\mss\)
-651.4
\(\eN\eO\msg\)
91.3
\(\eN\eO_2\msg\)
33.2
\(\eO\msg\)
249.2
\(\eO_2\msg\)
0
\(\eO_3\msg\)
142.7
\(\eO\eH^{-}\msaq\)
-230
\(\eOs\msg\)
791
\(\eOs\mss\)
0
\(\eOs\eO_4\msg\)
-337.2
\(\eOs\eO_4\mss\)
-394.1
\(\eP(g, white)\)
316.5
\(\eP(s, black)\)
-39.3
\(\eP(s, red)\)
-17.6
\(\eP(s, white)\)
0
\(\eP_2\msg\)
144
\(\eP_4\msg\)
58.9
\(\ePb\msg\)
195.2
\(\ePb(\eN\eO_3)_2\msaq\)
-416.3
\(\ePb(\eN\eO_3)_2\mss\)
-451.9
\(\ePb\mss\)
0
\(\ePb\eCl_2\mss\)
-359.4
\(\ePb\eC\eO_3\mss\)
-699.1
\(\ePb\eO\mss(\text{red or litharge})\)
-219
\(\ePb\eO\mss(\text{yellow or massicot})\)
-217.3
\(\ePb\eO_2\mss\)
-277.4
\(\ePb\eS\mss\)
-100.4
\(\ePb\eS\eO_4\mss\)
-920
\(\eP\eCl_3\msg\)
-287
\(\eP\eCl_3\msl\)
-319.7
\(\eP\eCl_5\msg\)
-374.9
\(\eP\eH_3\msg\)
5.4
\(\eP\eO\eCl_3\msg\)
-558.5
\(\eP\eO\eCl_3\msl\)
-597.1
\(\eRb\msg\)
80.9
\(\eRb\mss\)
0
\(\eRb\eCl\mss\)
-435.4
\(\eS\msg(\text{rhombic})\)
277.2
\(\eS\mss(\text{rhombic})\)
0
\(\eSe\msg(\text{gray})\)
227.1
\(\eSe\mss(\text{gray})\)
0
\(\eSi\msg\)
450
\(\eSi\mss\)
0
\(\eSi\eC\mss(\text{cubic})\)
-65.3
\(\eSi\eC\mss(\text{hexagonal})\)
-62.8
\(\eSi\eCl_4\msg\)
-657
\(\eSi\eCl_4\msl\)
-687
\(\eSi\eH_4\msg\)
34.3
\(\eSn\msg(\text{white})\)
301
\(\eSn\mss(\text{gray})\)
-2.1
\(\eSn\mss(\text{white})\)
0
\(\eSn\eCl_4\msg\)
-471.5
\(\eSn\eCl_4\msl\)
-511.3
\(\eSn\eO_2\mss\)
-557.6
\(\eS\eO_2\msg\)
-296.8
\(\eS\eO_3\msg\)
-395.7
\(\eS\eO_4^{2-}\msaq\)
-909.3
\(\eS\eO\eCl_2\msg\)
-212.5
\(\eTi\msg\)
473
\(\eTi\mss\)
0
\(\eTi\eCl_2\mss\)
-513.8
\(\eTi\eCl_3\mss\)
-720.9
\(\eTi\eCl_4\msg\)
-763
\(\eTi\eCl_4\msl\)
-804.2
\(\eTi\eO_2\mss\)
-944
\(\eU\msg\)
533
\(\eU\mss\)
0
\(\eU\eF_4\msg\)
-1598.7
\(\eU\eF_4\mss\)
-1914.2
\(\eU\eF_6\msg\)
-2147.4
\(\eU\eF_6\mss\)
-2197
\(\eU\eO_2\msg\)
-465.7
\(\eU\eO_2\mss\)
-1085
\(\eV\msg\)
514.2
\(\eV\mss\)
0
\(\eV_2\eO_5\mss\)
-1550.6
\(\eV\eCl_3\mss\)
-580.7
\(\eV\eCl_4\msg\)
-525.5
\(\eV\eCl_4\msl\)
-569.4
\(\eXe\msg\)
0
\(\eZn\msg\)
130.4
\(\eZn(\eN\eO_3)_2\mss\)
-483.7
\(\eZn\mss\)
0
\(\eZn\eBr_2\mss\)
-328.7
\(\eZn\eCl_2\mss\)
-415.1
\(\eZn\eF_2\mss\)
-764.4
\(\eZn\eI_2\mss\)
-208
\(\eZn\eS\mss(\text{sphalerite})\)
-206
\(\eZn\eS\eO_4\mss\)
-982.8
\(\eZr\msg\)
608.8
\(\eZr\mss\)
0
\(\eZr\eCl_2\mss\)
-502
\(\eZr\eCl_4\mss\)
-980.5
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