Phosphoric Acid and Sodium Hydroxide (First Neutralization)
H3PO4 + NaOH → NaH2PO4 + H2O
Visão geral
The first neutralization step of the triprotic phosphoric acid produces monosodium phosphate and water. Phosphoric acid has three ionizable protons with Ka1 = 7.1 × 10⁻³, Ka2 = 6.3 × 10⁻⁸, and Ka3 = 4.2 × 10⁻¹³. Each successive proton is progressively harder to remove.
Participantes
| Papel | Substância | Coeficiente | Estado |
|---|---|---|---|
| Reagente | Phosphoric Acid H₃PO₄ | 1 | (aq) |
| Reagente | Sodium Hydroxide NaOH | 1 | (aq) |
| Produto | Water H₂O | 1 | (l) |
Exemplo do cotidiano
Monosodium phosphate is used as a leavening agent in baking and as an emulsifier in processed cheese.
Importância industrial
O fosfato monossódico é utilizado no processamento alimentar, no tratamento de água e como agente tamponante em formulações farmacêuticas.
Propriedades
- Tipo
- Acid-Base
- Reversível
- Não
- Energia
- Exotérmico
- ΔH
- -56,0 kJ/mol
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Frequently Asked Questions
What is the equation for Phosphoric Acid and Sodium Hydroxide (First Neutralization)?
The balanced equation is: H₃PO₄ + NaOH → NaH₂PO₄ + H₂O.
What type of reaction is Phosphoric Acid and Sodium Hydroxide (First Neutralization)?
Phosphoric Acid and Sodium Hydroxide (First Neutralization) is a acid-base reaction.
Is Phosphoric Acid and Sodium Hydroxide (First Neutralization) exothermic or endothermic?
Phosphoric Acid and Sodium Hydroxide (First Neutralization) is exothermic (releases energy). The enthalpy change (ΔH) is -56.0 kJ/mol.