Hydronium, Ion (H3O+)								H3O1+(g)
Enthalpy Reference Temperature = Tr = 298.15 K								Standard State Pressure = p° = 0.1 MPa
		J·K-1 mol-1						kJ·mol-1
T/K		Cp°		S°		-[G°-H°(Tr)]/T		H-H°(Tr)		fH°		fG°		log Kf
0		0.		0.		INFINITE		-10.016		581.986
100		33.258		155.526		222.432		-6.691
200		33.536		178.619		195.407		-3.358
250		34.159		186.161		192.829		-1.667
298.15		35.146		192.257		192.257		0.		581.158		606.607		-106.275
300		35.190		192.474		192.257		0.065		581.154		606.765		-105.647
350		36.540		197.997		192.691		1.857		581.074		611.040		-91.193
400		38.081		202.975		193.670		3.722		581.045		615.324		-80.353
450		39.697		207.554		194.961		5.667		581.080		619.607		-71.922
500		41.309		211.820		196.436		7.692		581.180		623.883		-65.177
600		44.368		219.626		199.663		11.978		581.571		632.391		-55.055
700		47.158		226.678		203.026		16.556		582.194		640.815		-47.818
800		49.727		233.145		206.392		21.402		583.021		649.135		-42.384
900		52.131		239.142		209.702		26.496		584.029		657.341		-38.151
1000		54.401		244.753		212.929		31.824		585.199		665.426		-34.758
1100		56.542		250.040		216.065		37.372		586.513		673.386		-31.976
1200		58.553		255.047		219.107		43.128		587.955		681.221		-29.653
1300		60.428		259.808		222.056		49.078		589.512		688.930		-27.682
1400		62.164		264.351		224.916		55.209		591.168		696.517		-25.987
1500		63.763		268.695		227.691		61.506		592.911		703.981		-24.515
1600		65.229		272.858		230.385		67.957		594.730		711.327		-23.222
1700		66.569		276.853		233.001		74.548		596.614		718.557		-22.079
1800		67.790		280.693		235.545		81.267		598.552		725.674		-21.059
1900		68.903		284.389		238.019		88.102		600.537		732.682		-20.143
2000		69.915		287.949		240.427		95.044		602.561		739.585		-19.316
2100		70.837		291.383		242.772		102.082		604.618		746.386		-18.565
2200		71.676		294.698		245.058		109.209		606.700		753.088		-17.881
2300		72.440		297.901		247.286		116.415		608.803		759.695		-17.253
2400		73.138		300.999		249.460		123.694		610.923		766.210		-16.676
2500		73.775		303.998		251.582		131.041		613.055		772.637		-16.143
2600		74.358		306.903		253.654		138.448		615.196		778.977		-15.650
2700		74.891		309.719		255.678		145.911		617.343		785.236		-15.191
2800		75.381		312.452		257.657		153.424		619.492		791.415		-14.764
2900		75.831		315.105		259.593		160.985		621.642		797.517		-14.365
3000		76.245		317.683		261.486		168.589		623.790		803.545		-13.991
3100		76.626		320.189		263.340		176.233		625.935		809.502		-13.640
3200		76.979		322.628		265.155		183.914		628.074		815.389		-13.310
3300		77.304		325.001		266.932		191.628		630.207		821.210		-12.999
3400		77.606		327.314		268.674		199.374		632.331		826.966		-12.705
3500		77.886		329.567		270.382		207.149		634.445		832.659		-12.427
3600		78.146		331.765		272.057		214.950		636.548		838.293		-12.163
3700		78.387		333.910		273.700		222.777		638.639		843.868		-11.913
3800		78.612		336.003		275.312		230.627		640.718		849.387		-11.676
3900		78.823		338.048		276.894		238.499		642.782		854.852		-11.449
4000		79.019		340.046		278.448		246.391		644.832		860.263		-11.234
4100		79.202		342.000		279.975		254.302		646.866		865.624		-11.028
4200		79.374		343.910		281.474		262.231		648.884		870.935		-10.832
4300		79.535		345.780		282.948		270.177		650.885		876.198		-10.644
4400		79.687		347.610		284.397		278.138		652.869		881.415		-10.464
4500		79.829		349.402		285.822		286.114		654.835		886.586		-10.291
4600		79.962		351.158		287.223		294.103		656.782		891.715		-10.126
4700		80.088		352.880		288.602		302.106		658.712		896.801		-9.967
4800		80.207		354.567		289.958		310.121		660.622		901.847		-9.814
4900		80.319		356.222		291.294		318.147		662.513		906.853		-9.667
5000		80.425		357.846		292.609		326.185		664.386		911.821		-9.526
5100		80.526		359.439		293.904		334.232		666.239		916.751		-9.389
5200		80.621		361.004		295.179		342.290		668.074		921.645		-9.258
5300		80.710		362.540		296.435		350.356		669.890		926.504		-9.131
5400		80.796		364.050		297.674		358.431		671.687		931.329		-9.009
5500		80.877		365.533		298.894		366.515		673.467		936.120		-8.891
5600		80.953		366.991		300.097		374.607		675.228		940.881		-8.776
5700		81.027		368.425		301.283		382.706		676.972		945.609		-8.666
5800		81.096		369.834		302.453		390.812		678.699		950.307		-8.558
5900		81.162		371.221		303.607		398.925		680.410		954.974		-8.455
6000		81.225		372.586		304.745		407.044		682.104		959.614		-8.354
PREVIOUS: June 1966 (1 atm)								CURRENT: June 1966 (1 bar)
Hydronium, Ion (H3O+)								H3O1+(g)

Download table in tab-delimited text format.