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Additional Questions 1. Calcium hydroxide, Ca(OH), is slightly soluble in water,

ID: 549212 • Letter: A

Question

Additional Questions 1. Calcium hydroxide, Ca(OH), is slightly soluble in water, and fine particles of it can be sus- pended in water a. Write a balanced chemical equation showing the equilibrium of calcium hydroxide dissolv ing in water. Calon)2 If hydrochloric acid, HCl, is added to a suspension of calcium hydroxide in water, what change would you observe in the appearance of the solution? b. Write a balanced chemical equation showing the reaction responsible for causing the equi librium shift evidenced by the above observation. c.

Explanation / Answer

a) balanced eqaution:

Ca(OH)2 (s) <----------------------> Ca+2 (aq) + 2OH- (aq)

b)

Ca(OH)2 solid will dissolve in HCl because OH- ion react with H+ from . the change we can observe is more solid will dissolve in the solution.

c)

balaced equation ; the reaction in between HCl and Ca(OH)2

Ca(OH)2 (s) + 2HCl (aq) -------------------> CaCl2 (aq) + 2H2O (l)

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