towards the direction with the least effects of the stress, but how does this apply to BiCl3 not being soluble in water? When we added HCl, it dissolved because BiCl3 dissolves under HCl, and HCl is soluble in water because of the hydrogen and its ability to break up ions. BiCl3 was solid - a white powdery crystal. When we added more water after adding HCl, it got cloudy again. So water + BiCl3 = precipitate.

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter16: Solubility And Precipitation Equilibria
Section: Chapter Questions
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Using LeChatelier's principle, why doesn't BiCl3 dissolve with water?

 

In class, we did a bunch of experiments to apply LeChatelier's principle. I get that the equilibrium wants to go towards the direction with the least effects of the stress, but how does this apply to BiCl3 not being soluble in water? When we added HCl, it dissolved because BiCl3 dissolves under HCl, and HCl is soluble in water because of the hydrogen and its ability to break up ions. BiCl3 was solid - a white powdery crystal. When we added more water after adding HCl, it got cloudy again. So water + BiCl3 = precipitate.

 
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