发布时间 ： 2026-04-14 01:26:05 UTC
类别 ： Molecular atom
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Enthalpy online calculator, Enthalpy calculator, Enthalpy value calculation
The following table calculates the reaction enthalpy as NO3 + H2O -----> HNO3 + OH
Please keep in mind the following rules:
| Enthusiastic change | Spontaneous reaction? |
|---|---|
| Heat release (dH < 0) | Yes, dG < 0 |
| Heat release (dH < 0) | If |T dS| < |dH| |
| Endothermic (dH > 0) | If T dS > dH |
| Endothermic (dH > 0) | No, dG > 0 |
Reactant A: NO3
Reactant B: H2O
Reactant C: None
Product A: HNO3
Product B: OH
Product C: None
Click "Enthalpy value" and output the result.
Enthalpy results (kcal/mol)： 17.826
When reactants and products are two chemical formulas, the third one is "None".