6. CaF2 (s) ⇌ Ca2+ (aq) + 2 F- (aq) Dissolution of the slightly soluble salt Calcium Fluoride is shown by the equation above. Which of the following changes will increase [Ca2+] in a saturated solution of Calcium Fluoride, and why? (assume that after each change some Calcium Fluoride (s) remains in contact with the solution) a)Allowing some of the water to evaporate from the solution, because more Calcium Fluoride (s) will precipitate. b) Adding 1.0 M HNO3 (aq), because some F- (aq) ions will become protonated. c) Adding 0.1 M NaNO3 (aq), because additional liquid will dilute the solution. d) Adding NaF (s), because the reaction will proceed toward reactants.
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Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
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Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.
6. CaF2 (s) ⇌ Ca2+ (aq) + 2 F- (aq)
Dissolution of the slightly soluble salt Calcium Fluoride is shown by the equation above. Which of the following changes will increase [Ca2+] in a saturated solution of Calcium Fluoride, and why? (assume that after each change some Calcium Fluoride (s) remains in contact with the solution)
a)Allowing some of the water to evaporate from the solution, because more Calcium Fluoride (s) will precipitate.
b) Adding 1.0 M HNO3 (aq), because some F- (aq) ions will become protonated.
c) Adding 0.1 M NaNO3 (aq), because additional liquid will dilute the solution.
d) Adding NaF (s), because the reaction will proceed toward reactants.
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