Lab ACTIV
3. Write an experiment to prove osmosis of using potato,
Answers
Answer:
Material Required
✓ A fresh large-sized potato tuber
✓ 20% sucrose solution
✓ Beaker
✓ Water
✓ Scalpel/blade
✓ Petri dish
✓ A Bell pin needle that is labelled with a waterproof ink
Procedure
• Slice the potato tuber into two equal halves with the help of a scalpel or a blade. The outer skin is to be peeled off. Since the tuber shape is irregular, slice the halves into squares
• From the mid-region of the tuber, scoop from the soft parenchyma, so as to form a tiny cavity of a square or a circular shape. At the base, the cavity prepared should have a minimum thickness.
• Fill up half the cavity with the freshly prepared 20% sugar solution. Into the cavity, fix a pin in a way that the mark is in the same line with the layer of the sucrose solution.
• Set up the osmometer in a Petri dish/beaker that is filled with water in a way such that 75% of the potato osmometer is immersed in water
The set up should remain uninterrupted for close to 1 hour.
• Notice the sugar solution in the osmometer towards the end of the experiment
• Carry out the experiment with the help of water in the cavity and the sucrose solution in the petri dish/beaker.
Observation
After a period of time, within the osmoscope, the sugar solution rises and is seen coloured.
Explanation:
Hope it helps you....☺️
Answer:
֎EXPERIMENT OF OSMOSIS USING POTATO֍
᪥AIM➛ To prove osmosis using potato.
᪥MATERIAL REQUIRED➛ One raw potato, one boiled potato, two beakers/bowls, two pins, water, sharp knife.
᪥PROCEDURE➛
⤷ Take the raw potato and boiled potato, peel off the skins.
⤷ Cut cube shaped cups from them.
⤷ Prepare a few ml.of saturated sugar solution.
⤷ Pour the sugar solution in the potato cup to a level.
⤷ Mark the level of sugar solution by piercing the pin.
⤷ Keep the potato cup in beaker.
⤷ Pour water in the beaker to half of the height of the potato cup.Ensure that the potato cup does not float or submerge in water.
⤷ Leave the arrangement for half an hour and note observations.Here water enters from beaker into potato cup.
⤷ Repeat the experiment by taking sugar solution in the beaker and water in the potato cup.Observe it after half an hour.
⤷ This time water from the potato cup enters beaker reducing the level of water in the potato cup.
᪥RESULT➛
⤷ By the above activities we can say that water always moved towards the sugar solution.
⤷ Such process in which water moves towards sugar solution due to process is called OSMOSIS.
✠✠✠HOPE IT HELPS YOU✠✠✠