Why would pentane (b.p. 36 °C) be poor choice for the penny experiment? Think about how long it takes you to add the drops.

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Question

Why would pentane (b.p. 36 °C) be poor choice for the penny experiment? Think about how long it takes you to add the drops.

David · Accepted Answer

Solution 
The penny experiment serves to demonstrate the difference in surface tension of different 
liquid. Because of the surface tension, a liquid tends to pull its molecules on the surface 
towards the bulk. As a result a drop of liquid takes a spherical shape.

Why would pentane (b.p. 36 °C) be poor choice for the penny experiment? Think about how long it takes you to add the drops.

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