Careers360 Logo
Borax Formula - Meaning. Formula, Resources, Features, Uses, FAQs

Borax Formula - Meaning. Formula, Resources, Features, Uses, FAQs

Edited By caree | Updated on Oct 07, 2024 03:13 PM IST

Borax, scientifically known as sodium tetraborate decahydrate (Na2B4O7·10H2O), is a white crystalline mineral that is highly soluble in water. It is a boron-sodium-oxygen-water compound and forms a structural geometry that accounts for many of its properties. Borax is essentially an alkaline mineral that takes the role of neutralizing acids and often serves as a pH buffer in many applications.

Thus, the molecular formula of Borax can be represented in the form given below:

Na2B4O7.10H2O

Where,
Na is Sodium
B is Boron
O is Oxygen,
H is Hydrogen
Subscripts indicate the number of atoms of the respective element in the compound.

This is a very old compound, known since ancient times, with ancient civilizations knowing its cleansing and preservative properties. In the present day, major applications of Borax include being a cleaning agent, laundry booster, and pest control solution. It softens water so much that it is used in cleaning applications, which provides the maximum utility of detergents. It is an antifungal and a bacteria, which explains its use in cleaning as well. Indeed, appreciating the chemical nature and properties of borax is very essential in understanding the different applications that will be seen in the next sections.

It is the most important compound of boron. It is a white crystalline solid of formula Na2B4O7⋅10H2O. In fact, it contains the tetranuclear units [B4O5(OH)4]2-and correct formula; therefore, is. Borax dissolves in water to give an alkaline solution.

Na2 B4O7+7H2O→2NaOH+4H3BO3

On heating, borax first loses water molecules and swells up. On further heating, it turns into a transparent liquid, which solidifies into the glass-like material known as a borax bead.

Na2 B4O7⋅10H2O→ΔNa2 B4O7→Δ2NaBO2+B2O3

The metaborates of many transition metals have characteristic colors and, therefore, the borax bead test can be used to identify them in the laboratory. For example, when borax is heated in a Bunsen burner flame with CoO on a loop of platinum wire, a blue colored
Co(BO2)2 bead is formed.

Also read -

Borax: Various Kinds and Aspects

Though most people may only be familiar with the common, powdered form of Borax, in reality, there are a number of types and formulations of the mineral to best serve its purpose. One of the most common forms is that of the decahydrate, which physically holds ten molecules of water; however, the Borax also exists in anhydrous forms that do not contain water and are primarily used for industrial applications.

Apart from this, Borax is also available in numerous combinations and products that are manufactured for numerous performances. For instance, a common constituent of most laundry detergents is Borax—a water softener and stain remover. It's an element of the cream that provides cleaning of mold and mildew—fully exploiting its antifungal features. In DIY projects, Borax is highly utilized in the making of slime, and it is a fun activity to have kids involved since it's a learning process; it introduces simple chemical reactions.

It is observed that borax is not just any other house substance; the mineral plays an active role in agriculture as one of the micronutrients for plants in boron-deficient soils. That explains how high, in terms of importance, the compound is, and versatile to be high in importance both in domestic activities and commercially oriented areas.

Related Topics link

Real-World Relevance and Applications of Borax

The many real-world applications of Borax range from household cleaning to scientific research. Many people rely on Borax as their partner in cleaning their houses. After all, it can be added to laundry to make it more efficient and actually possesses qualities that make it an excellent stain remover and odor eliminator while softening water. One of the most preferred alternatives for households with eco-friendly cleaning solutions is to just mix Borax with water to create enough solutions that can clean off heavy dirt on surfaces.

Borax is a very promising insecticide when it comes to pest control against cockroaches and ants. This will dehydrate their digestive systems upon consumption and thus kill the pests that way. Favoritism is thus done with the fact that this kind of pest control is more favorable compared with those that are chemically based; thus, Borax is often the in thing when one wishes to curb exposure to hazardous chemical substances.

This variety is vastly used at school to explain loaded concepts, such as solubility, pH, and chemical reactions. This is because the variety is not dangerous and is considered the perfect variant to execute educational experiments. For example, making slime with Borax and glue is a cool way for children can access polymer chemistry and the qualities of non-Newtonian fluids.


Recommended topic video on (Borax Formula)

Some Solved Examples

Example 1
Question:
What is the chemical formula of the borax bead?
1) Na₂B₄O₇
2) Na₂BO₃
3) NaBO₂ + B₂O₃ (correct)
4) NaBO₂

Solution: The borax bead is formed primarily from sodium metaborate (NaBO₂) and boric anhydride (B₂O₃) when borax is heated. Therefore, the correct answer is option (3).

Example 2
Question
: Which of the following ions can be detected by the borax bead test?
1) Ni⁺
2) Co²⁺
3) Pb²⁺
4) Both a and b (correct)

Solution: The borax bead test is used to identify colored basic radicals, specifically transition metals. Both nickel (Ni²⁺) and cobalt (Co²⁺) can be detected using this method. Therefore, the correct answer is option (4).

Example 3
Question:
What is the color of cobalt metaborate?
1) Blue (correct)
2) Brown
3) Pink
4) Red

Solution: Cobalt metaborate, formed during the borax bead test, exhibits a distinct blue color. Hence, the correct answer is option (1).

Example 4
Question:
What products are formed when BCl₃ reacts with water?
1) B₂O₃ + HOCl
2) H₃BO₃ + HCl (correct)
3) B₂H₆ + HCl
4) No reaction

Solution: When boron trichloride (BCl₃) undergoes hydrolysis with water, it produces boric acid (H₃BO₃) and hydrochloric acid (HCl). Therefore, the correct answer is option (2).

NCERT Chemistry Notes :

Summary

The unique chemical composition that is Borax can be represented by a chemical formula: Na2B4O7 · 10H2O. Thus, Borax is created with the incorporation of sodium, boron, oxygen, and water molecules that give their unique characteristics to further utilize such properties. Originally, a dihydrate state exists in the molecule, which has absorbed a further amount of ten water molecules that dissolve and act in atmospheres consisting of water.

Also, check-

JEE Main Highest Scoring Chapters & Topics
Just Study 40% Syllabus and Score upto 100%
Download EBook

Frequently Asked Questions (FAQs)

1. 1. What is borax powder used for?

Borax is used for the safekeeping, transport, and use of radioactive material in neutron-capture shields. This compound is also known to act as an antifungal agent, so it can be used to destroy mold or prevent its growth. 

The field of biochemistry is known for its extensive use of borax to produce buffer solutions.

2. 2. Is borax toxic?

While some studies suggest that borax is nontoxic, it can be noted that this compound is highly toxic to insects and is a potent insecticide. It can also be noted that borax is a potential carcinogen and can increase the risk of liver cancer. In addition, repeated exposure to large amounts of borax can cause irritation to the respiratory system.

3. 3.What is borax powder chemistry?

A major compound of boron, other minerals, and boric acid salts is borax and is also known as sodium borate, sodium tetraborate, and even disodium tetraborate. Powdered borax, with soft crystals, water-soluble crystals, is white. Borax, sold commercially, has lost weight.

4. 4. Does Borax look like baking soda?

Baking soda and borax are obtained by combining many widely available chemicals. Borax is classified as white borate white, while baking soda is classified as white crystal bicarbonate.

5. 5.When Borax is added to flame which colour is produced?

When borax is added to a flame, it produces a yellow-green color. Borax is not used for this purpose in fireworks due to the overwhelming yellow color of sodium

Articles

Get answers from students and experts
Back to top