H3O+

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Species data

Common Formula	H3O+
Stoichiometric Formula	H3O+
Name	Hydronium cation
Mass	19.01784 a.m.u
Charge	1
CAS	13968-08-6
Inchi	InChI=1S/H2O/h1H2/p+1
InchiKey	XLYOFNOQVPJJNP-UHFFFAOYSA-O
State	Ground State

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KIDA H3O+

ISM Abundance

log₁₀ Abundance	Reference	Source Name	Source Type	Link

Polarizability

Evaluation	Definition	Value (Å³)	Method	Origin	Reference
	total	0.799	Calculations	Database : NIST COMPUTATIONAL CHEMISTRY COMPARISON AND BENCHMARK DATABASE

Definition: total Value (Å³): 0.799 Method: Calculations Origin: Database : NIST COMPUTATIONAL CHEMISTRY COMPARISON AND BENCHMARK DATABASE Reference:

Dipole moment

Evaluation	Value (D)	Method	Origin	Reference
	-1.439	Calculations	Database : NIST COMPUTATIONAL CHEMISTRY COMPARISON AND BENCHMARK DATABASE

Value (D): -1.439 Method: Calculations Origin: Database : NIST COMPUTATIONAL CHEMISTRY COMPARISON AND BENCHMARK DATABASE Reference:

Enthalpy of formation

Evaluation	T (K)	Value (kJ.mol^-1)	Method	Origin	Reference
	0	604.215 ±0.61	Reviews and Evaluations	Database : Burcat
	298	603.417 ±0.61	Reviews and Evaluations	Database : Burcat

T (K): 0 Value (kJ.mol^-1) : 604.215 ±0.61 Method: Reviews and Evaluations Origin: Other database Reference:
T (K): 298 Value (kJ.mol^-1) : 603.417 ±0.61 Method: Reviews and Evaluations Origin: Other database Reference:

Desorption energy

No data

Diffusion energy

No data