Electrolysis of Water

Electrolysis of water is an important chemistry experiment that shows how water can be split into hydrogen and oxygen gases using electricity.

In this article, we will explain the electrolysis of water experiment, materials required, steps, and its working principle.

⚡ What is Electrolysis?

Electrolysis is a process in which electric current is used to break a compound into its elements.

👉 In this experiment, water (H₂O) breaks into:

Hydrogen gas (H₂)

Oxygen gas (O₂)

🧰 Materials Required

Battery (6V or 9V)

Two graphite pencils (or electrodes)

Water

A few drops of acid (lemon juice or vinegar)

Two test tubes or small containers

Connecting wires

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DC Battery (9V)

Graphite Electrodes / Carbon Rods

Beaker Set

Jumper Wires Set

School Chemistry Kit

🔧 Steps to Perform Electrolysis

1️⃣ Fill a container with water

2️⃣ Add a few drops of lemon juice (to increase conductivity)

3️⃣ Insert two electrodes into water

4️⃣ Connect electrodes to battery

5️⃣ Place test tubes over electrodes

👉 Bubbles will start forming!

👁️ Observation

Hydrogen gas forms at the negative electrode (cathode)

Oxygen gas forms at the positive electrode (anode)

More bubbles appear at cathode

👉 Ratio of gases is 2:1 (Hydrogen : Oxygen)

💡 Working Principle

Electrolysis works based on chemical decomposition using electricity.

Electric current passes through water

Breaks H₂O into H₂ and O₂

Hydrogen collects at cathode

Oxygen collects at anode

👉 This is used in hydrogen fuel production.

⚠️ Safety Tips

Use low voltage only

Do not touch electrodes while current flows

Perform in a ventilated area

Handle connections carefully

🎯 Benefits of This Project

✔ Easy chemistry experiment

✔ Important for exams

✔ Demonstrates real-life application

✔ Great for school practical's

👉 Also read: pH Scale Testing at Home

👉 Check: Acid-Base Indicator from Turmeric

🏁 Final Thoughts

The electrolysis of water experiment is a simple and powerful way to understand how electricity can cause chemical changes.

👉 It is one of the most important experiments in chemistry.

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