Question

To determine the surface tension of liquid using stalagmometer viva questions applid chemistry''

Answer 1

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Answer 2

Explanation:

• A glass tube like structure or glass capillary tube that has a small bulb like formation made in the middle is known as the stalagmometer.
• This device is used to measure the surface tension of water or any liquid here for that matter.
• The water is sucked in up to a mark X in the tube and is allowed to drip off drop by drop till a point Y in the tube.
• This process is repeated for a minimum of three times and the mean value of the readings is taken and the below given formula is applied to calculate the surface tension.

• $\mathrm{V} 1=\frac{n 2 p 1}{n 1 p^{2}} \mathrm{v} 2$ {where n1&n2 are no. of drops of test liquid and water; v1&v2 are surface tension of test liquid and water; p1&p2 are density}