Question

give an activity to demonstrate the electrolysis of water​

Answer 1

$\huge\underline\bold\orange{Answer:}$

To demonstrate the electrolysis of water :

Materials Required : A battery of 9V (six cells of 1.5 V),two graphite pencils, a beaker,tap water, connecting wires and tape.

Procedure : Sharpen Both ends of both the pencil. Fill the beaker with tap water. Make a simple circuit. Secure the wire with tapes. Use a piece of cardboard to hold the pencils in a vertical position. Place the exposed tips of the pencil in the water,such that tips are fully submerged but are not touching the bottom. Now wait for 3-4 minutes.

Small gas bubbles are seen to be getting formed near the electrodes. We can call this change,taking place in tap water,a chemical change.

Answer 2

$\tt \red { \pmb{\: \underline{To \: Demonstrate \: The \: Electrolysis \: of \: Water}}} : -$

$\bf \: { \pmb{ \colorbox{lavender}{ \blue{Material \: Required}}}} : -$

• One Battery of 9V
• Two Graphite Pencils
• One Beaker
• Tap Water
• Connecting Wires and tape

$\bf \: { \pmb{ \colorbox{lavender}{ \blue{Procedure }}}} : -$

• Sharpen both ends of both the pencils.
• Fill the beaker with tap water. Make sure that the contact with the Graphite in the pencils is perfect
• Secure the wires with tape.
• Use a piece of Cardboard to hold the pencils in a vertical position.
• Place the exposed tips of the pencils in the water,such that tips are fully submerged but aren't touching the bottom.
• The pencil is being used as ELECTRODE here. Now, Wait for 3-4 minutes and observe carefully.

$\bf \: { \pmb{ \colorbox{lavender}{ \blue{Observation }}}} : -$

• Small Gas Bubbles will formed near the electrodes.
• The change takes place in the tap water is the Chemical Change.