NaOH: Acid or Base?


written by


update on

Have you ever wondered if NaOH is an acid or a base? Well, you’re not alone. The question of whether NaOH is acidic or basic has puzzled many, but fear not! In this article, we will dive deep into the world of NaOH and uncover the truth. So sit back, relax, and get ready to unravel the mystery of NaOH.

Introduction to NaOH

Sodium hydroxide, commonly known as NaOH, is a strong alkaline compound. It is highly soluble in water and forms a caustic solution. NaOH is widely used in various industries, including chemical manufacturing, water treatment, and soap production. It is also commonly found in household cleaning products.

Now that we have a basic understanding of what NaOH is, let’s explore its nature further and find out if it is an acid or a base.

Acid or Base: The Definition

Before we can determine whether NaOH is an acid or a base, let’s first understand the definitions of acids and bases.

An acid is a substance that donates hydrogen ions (H+) when dissolved in water. Acids typically have a sour taste and can react with metals to produce hydrogen gas.

On the other hand, a base is a substance that accepts hydrogen ions (H+) or donates hydroxide ions (OH-) when dissolved in water. Bases are characterized by a bitter taste and a slippery feel.

NaOH: A Base by Nature

Now that we know the definitions of acids and bases, it becomes evident that NaOH is, in fact, a base. NaOH dissociates in water to produce hydroxide ions (OH-) and sodium ions (Na+). This dissociation of NaOH in water makes it an excellent example of a base.

The chemical equation for the dissociation of NaOH in water is as follows:

NaOH + H2O → Na+ + OH-

As you can see, NaOH releases hydroxide ions (OH-) when dissolved in water, which is a characteristic of bases. This process gives NaOH its alkaline properties.

NaOH: Alkaline Solutions

NaOH, being a base, forms alkaline solutions when dissolved in water. Alkaline solutions have a high pH value and are known for their caustic properties. NaOH solutions are often used in various applications due to their ability to neutralize acids and act as effective cleaning agents.

It is important to note that the concentration of NaOH in a solution determines its strength as a base. Higher concentrations of NaOH result in more alkaline and caustic solutions.

Uses of NaOH

Now that we know NaOH is a base, let’s explore its diverse range of uses. NaOH plays a crucial role in various industries and household applications.

1. Chemical Manufacturing:

NaOH is a key component in the production of various chemicals, such as detergents, paper, and textiles. It is used in the synthesis of organic and inorganic compounds.

2. Water Treatment:

NaOH is used in water treatment plants to adjust pH levels, neutralize acidity, and remove impurities. It helps in treating wastewater and maintaining water quality.

3. Soap Production:

NaOH is an essential ingredient in soap making. It reacts with fats or oils to form soap through a process called saponification.

4. Cleaning Products:

NaOH is present in many household cleaning products, such as drain cleaners and oven cleaners. Its alkaline properties allow it to dissolve grease, oil, and other stubborn stains.

Frequently Asked Questions (FAQs)

1. Is NaOH dangerous to handle?

Yes, NaOH is a caustic substance and can cause severe burns if it comes into contact with the skin. It is essential to handle NaOH with care and wear protective gear when working with it.

2. Can NaOH be used to neutralize acids?

Yes, NaOH is commonly used to neutralize acids due to its ability to donate hydroxide ions. It reacts with acids to form water and a salt.

3. Can NaOH be used as a food ingredient?

No, NaOH should not be used as a food ingredient. It is a highly corrosive substance and can cause harm if ingested.

4. How can I safely dispose of NaOH?

NaOH should be neutralized before disposal. It can be neutralized by adding an acid, such as vinegar, and then safely disposed of according to local regulations.

5. Where can I buy NaOH?

NaOH can be purchased from chemical supply stores or online suppliers. It is important to handle and store NaOH properly to ensure safety.


In conclusion, NaOH is an alkaline compound and is classified as a base. It dissociates in water to produce hydroxide ions (OH-) and is known for its caustic properties. NaOH finds applications in various industries, including chemical manufacturing, water treatment, soap production, and as a cleaning agent. However, it is crucial to handle NaOH with care due to its caustic nature.

We hope this article has shed light on the question of whether NaOH is an acid or a base. If you have any more questions or would like further information, feel free to reach out to us. Stay curious!

External Sources:

1. [Chemical Safety Information from Intergovernmental Organizations – Sodium Hydroxide](

2. [National Library of Medicine – Sodium Hydroxide](

NaOH: Acid or Base?
naoh asam atau basa

Leave a Comment