chemistry

Orthoborate

Orthoborate is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Orthoborate rather than just read about it. In short: In inorganic chemistry, an orthoborate is a polyatomic anion with formula [BO3]3− or a salt containing the anion; such as trisodium orthoborate (Na+)3[BO3]3−. It is one of several boron oxyanions, or borates.

Key takeaways

Orthoborate belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Orthoborate to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Orthoborate from memory before moving on to harder problems.

Reference excerpt

In inorganic chemistry, an orthoborate is a polyatomic anion with formula [BO3]3− or a salt containing the anion; such as trisodium orthoborate (Na+)3[BO3]3−. It is one of several boron oxyanions, or borates. The name is also used in organic chemistry for the trivalent functional group B(O−)3, or any compound (ester) that contains it, such as triethyl orthoborate B(OC2H5)3.

Structure The orthoborate ion is known in the solid state, for example, in calcium orthoborate (Ca2+)3([BO3]3−)2, where it adopts a nearly trigonal planar structure. It is a structural analogue of the carbonate anion [CO3]2−, with which it is isoelectronic. Simple bonding theories point to the trigonal planar structure. In terms of valence bond theory, the bonds are formed by using sp2 hybrid orbitals on boron. Some compounds termed orthoborates do not necessarily contain the trigonal planar ion. For example, gadolinium orthoborate GdBO3 contains the planar [BO3]3− ion only a high temperatures; otherwise it contains the polyborate anion [B3O9]9−.

Reactions

Solution in water When orthoborate salts are dissolved in water, the anion converts mostly to boric acid B(OH)3 and other hydrogen-containing borate anions, mainly tetrahydroxyborate [B(OH)4]−. The reactions of orthoborate in solution are therefore mostly those of these compounds. In particular, these reactions include the condensation of tetrahydroxoborate with cis-vicinal diols such as mannitol, sorbitol, glucose and glycerol, to form relatively stable anion esters. This reaction is used in analytic chemistry to determine the concentration of borate anions.

Illustrations

Worked examples

Example 1 — a first encounter with Orthoborate

Start with the simplest possible case. Write down what Orthoborate claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Orthoborate before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Orthoborate ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Orthoborate

In research: Orthoborate appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Orthoborate in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Orthoborate is common in secondary-school and first-year university syllabi. It links to neighbouring topics Boron compounds, Boron oxyanions, Inorganic compounds, so understanding it makes those chapters shorter.
In everyday life: Look for Orthoborate outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Orthoborate” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Orthoborate in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Orthoborate means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Orthoborate out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Orthoborate in simple terms?

Why does Orthoborate matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Orthoborate?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Orthoborate.