Phosphoric Acid and Sodium Hydroxide (First Neutralization)
H3PO4 + NaOH → NaH2PO4 + H2O
نظرة عامة
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.
المشاركون
| الدور | المادة | المعامل | الحالة |
|---|---|---|---|
| متفاعل | Phosphoric Acid H₃PO₄ | 1 | (aq) |
| متفاعل | Sodium Hydroxide NaOH | 1 | (aq) |
| منتج | Water H₂O | 1 | (l) |
مثال من الحياة اليومية
Monosodium phosphate is used as a leavening agent in baking and as an emulsifier in processed cheese.
الأهمية الصناعية
Monosodium phosphate is used in food processing, water treatment, and as a buffering agent in pharmaceutical formulations.
الخصائص
- النوع
- Acid-Base
- قابل للعكس
- لا
- الطاقة
- طارد للحرارة
- ΔH
- -56,0 kJ/mol
التفاعلات ذات الصلة
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)
Hydrochloric Acid and Sodium Hydroxide Neutralization
Nitric Acid and Potassium Hydroxide Neutralization
Hydrochloric Acid and Barium 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.