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

Reações relacionadas

Hydrochloric Acid and Barium Hydroxide Acetic Acid and Sodium Acetate Buffer System Acetic Acid Dissociation in Water Ammonia and Hydrochloric Acid Ascorbic Acid and Sodium Hydroxide Barium Hydroxide and Ammonium Thiocyanate (Endothermic) Carbonic Acid and Sodium Hydroxide Aluminum Hydroxide as Amphoteric Acid with NaOH Aluminum Chloride and Chloride Ion (Lewis Acid-Base) Formic Acid and Sodium Hydroxide

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.