Phosphoric Acid Acidity
Phosphoric acid, also known as H3PO4 is a non-metal phosphate. It is an inorganic weak acid but long exposure to it can result into irritation in skin and eyes.
Phosphoric acid consists of three H+ ions. Removal of three H+ ions, two H+ ions or one H+ ion gives out the phosphate ion (PO43-), hydrogen phosphate ion (HPO42-) and dihydrogen phosphate ion (H2PO4–) respectively.
- The pH value of phosphoric acid ranges from 1.08 to 7.00 on pH scale.
- Its pH value and hence acidity changes with change in concentration.
- Higher the concentration of phosphoric acid higher will be its pH value and acidic strength.
- In low concentration it can also behave as a basic.
Hence it can serve properties of both acidic and basic. Its pH value at different concentrations is given below:
Total moles of pure H3PO4 per Litre |
Concentration (%) |
pH |
---|---|---|
1 |
91.7 |
1.08 |
10-1 |
76.1 |
1.62 |
10-2 |
43.1 |
2.25 |
10-3 |
10.6 |
3.05 |
10-4 |
1.30 |
4.01 |
10-5 |
0.133 |
5.00 |
10-6 |
1.34 × 10-2 |
5.97 |
10-7 |
1.80 × 10-3 |
6.74 |
10-10 |
8.24 × 10-4 |
7.00 |
Phosphoric Acid
Phosphoric acid is a colorless, odorless, inorganic compound. It is mainly found as an aqueous solution with a concentration of about 85%. It is represented by the chemical formula H3PO4. It is extensively used in distinct fields. Its applications include its usage in manufacturing fertilizers, various pharmaceutical products, skin care products, and much more.
In this article, we will do an in-depth study of Phosphoric acids, their properties, their usage, and others in detail.
Table of Content
- What is Phosphoric Acid?
- Structure of Phosphoric Acid
- Preparation of Phosphoric Acid
- Types of Phosphoric Acid
- Properties of Phosphoric Acid
- Uses of Phosphoric Acid
Phosphoric Acid Overview |
|
---|---|
IUPAC Name |
Ortho Phosphoric Acid |
Chemical Formula |
H3PO4 |
Molar Mass |
97.99 g/mol |
Melting Point |
42.4 °C OR 108.3 °F OR 315.5 K |
Boiling Point |
407 °C OR 765 °F OR 680 K |
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