High School Why does mercury rise in a glass capillary tube despite its strong cohesion?

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Mercury rises in a glass capillary tube despite its strong cohesion due to the balance of cohesive forces and adhesive forces acting on it. While mercury's cohesion prevents it from climbing the walls of the tube, the downward component of these cohesive forces, combined with the hydrostatic pressure of the liquid, results in a lower level of mercury in the tube compared to the bulk liquid. This phenomenon illustrates that the adhesive forces between mercury and glass are not strong enough to overcome its cohesive forces. Consequently, the mercury level remains below the surface of the bulk liquid. Understanding this balance of forces clarifies why mercury behaves differently than water in capillary action.
Abbas0000
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It's a question which come into my mind after reading related notes now and again and I can't think of plausible response to it.
Given Statements:
We have a container filled with mercury and a glass capillary tube placed in it . As tube's diameter become smaller mercury's height in tube will get shorter and shorter.The reason said to be due to strong cohesion mercury has which makes it reluctant to stick to capillary walls and go higher unlike water.
My Question:
If mercury has such strong cohesion why it's seen to rise,although small, in our glass tube?

I'll appreciate any help !
 
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Ygggdrasil said:
Mercury in a glass capillary tube will not rise above the surface of the bulk liquid; the level of mercury in the capillary will actually be below the surface of he liquid:
https://en.eewikipedia.org/wiki/Capillary_action
Well it's right but why it's not totally getting out of tube?
 
Abbas0000 said:
Well it's right but why it's not totally getting out of tube?
The resultant of its cohesive forces and the forces adhering to the glass has a downwards component which acts against the force due to the hydrostatic pressure of the liquid. Net result is a lower level. The mercury is pulled downwards.
 
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