Question

2.inur
3. Need of Activity of electrolysis of water
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Answer 1

Answer:

If we have to separate two atoms, we need to have minimum energy. This energy is supported by the battery. The terminal is attached with the battery which can act as a bridge for ion transportation. Therefore, we have to add baking soda to the pure water for this experiment

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.