Question

With the help of an activity show the process of electrolysis? Plz help

Answer 1

1.Take a glass beaker fix two electrodes.

2.The positive electrode acts as anode &negative electrode act as cathode.

3.Fill 1/3 of beaker with water.

4.Take two test tubes. Insert on electrodes.

5.Observe the level of water in the test tubes.

6.Connect the electrodes to a battery.

7.Pass the electricity for a period of time.

8.Later switch off the current and observe the level of water in test tubes.

9.The level of water in the test tubes is decreased.

10.The free space in the test tubes is filled with H2 & O2 gases.

11.Oxygen gas is evolved at anode and hydrogen gas released at cathode

HOPE IT HELPS

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.