Structure of Orthoboric Acid

The chemical formula of orthoboric acid is BH3O3. It has a trigonal structure. In this configuration, three oxygen atoms adopt a trigonal planar arrangement around the boron. The B-O bond length measures 136 pm, while the O-H bond is 97 pm.

Two crystalline forms of orthoboric acid exist: triclinic and hexagonal. Crystalline boric acid comprises layers of B(OH)3 molecules, interconnected by hydrogen bonds with a length of 272 pm. The separation between two consecutive layers measures 318 pm. The hexagonal form is thermodynamically more stable and can be obtained with a special preparation method.

Triclinic and Hexagonal Forms of Orthoboric Acid.

Orthoboric Acid

Orthoboric Acid, also known as boric acid, is a mild Lewis acid of Boron. Orthoboric Acid is found in volcanic areas and various minerals. It appears as a white crystalline solid and has a trigonal planar structure. Orthoboric Acid serves diverse purposes, from being a pesticide and food preservative to having applications in medicine and the manufacturing industry.

This article provides an overview of its properties, molecular structure, preparation methods, reactions and performance as compared to borax. It also delves into the uses of orthoboric acid, emphasizing its role as a generally safe pesticide while highlighting precautions due to its potential toxicity.

Table of Content

  • What is Orthoboric Acid?
  • Properties of Orthoboric Acid
  • Structure of Orthoboric Acid
  • Orthoboric Acid Reactions
  • Orthoboric Acid vs Borax
  • Uses of Orthoboric Acid

Similar Reads

What is Orthoboric Acid?

Orthoboric acid, popularly known as boric acid is a mild, odorless monobasic Lewis acid of Boron. It naturally occurs as a powder and is found mainly in its free state in some volcanic areas....

Structure of Orthoboric Acid

The chemical formula of orthoboric acid is BH3O3. It has a trigonal structure. In this configuration, three oxygen atoms adopt a trigonal planar arrangement around the boron. The B-O bond length measures 136 pm, while the O-H bond is 97 pm....

Properties of Orthoboric Acid

The properties of Orthoboric Acid is mentioned below...

Preparation of Orthoboric Acid

Wilhelm Homberg was the first one to extract and synthesize Orthoboric Acid. Utilizing borax and mineral acids, he synthesized the compound. Interestingly, historical records reveal that ancient Greeks employed borates and boric acid, primarily for food preservation and cleaning purposes....

Orthoboric Acid Reactions

Orthoboric Acid undergoes following Recations...

Orthoboric Acid vs Borax

Borax (Na2[B4O5(OH)4]·8H2O) is often confused with boric acid, but they are different formulations of the same compound. Both of them are known as borates. Borax is a mineral found naturally and is used as a cleaning agent whereas is extracted, processed and refined to form a powder that is mostly used in pest control....

Uses of Orthoboric Acid

The uses of orthoboric acid are mentioned below:...

Orthoboric Acid – FAQs

1. Why is Orthoboric Acid weak?...