Question

Explain why the liquid rises up the tubing in the
experiment shown on top of page​

Answer 1

➭ AnSwer :-

• The rise of water in a thin tube inserted in water is caused by forces of attraction between the molecules of water and the glass walls and among the molecules of water themselves.
• These attractive forces just balance the force of gravity of the column of water that has risen to a characteristic height.

Answer 2

Answer:

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Explanation:

The sucrose solution is hypertonic to the water – it is a more concentrated solution. There is a net movement of water molecules, by osmosis, from the water outside to the sucrose solution inside the Visking tubing. This makes the liquid level in the capillary tube rise.

A less concentrated solution is hypotonic to a more concentrated solution, while two solutions at the same concentration are isotonic.

The table summarises the results of the four combinations of water and 10% sucrose in the experiments, showing the movement of water and solute across a concentration gradient.