Chem 102 - General Chemistry II » Summer 2021 » Quiz 3

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Question #1
Write the solubility product constant expression for the reaction of Calcium Fluoride (CaF2)(s)) dissolving to Calcium-ion and Fluoride-ion. 
A.   Ksp = [Ca2+] [F–]^2
B.   Ksp = [Ca2] [F+]^2
Question #2
The solubility product constant of silver acetate (AgC2H3O2) is 2.0 x 10–3.  The solubility product constant of silver chloride (AgCl)  is                1.8 x 10–10.  Which salt is least soluble?  Briefly explain your answer for full credit. 
A.   silver acetate is more soluble because it has a greater solubility product constant with silver acetate having a solubility of equal to 0.0447 M and silver chloride has solubility equal to 1.34x10^-5
B.   AgCl is less soluble because its Ksp is smaller than Ksp of AgC2H3O4
Question #3
The ionic concentration of a salt that has dissolved into a saturated solution is 7.4 x10–5 M. What is the molar solubility of the salt? The salt has a molecular weight of 342.3 g/mol.   
A.   Molar solubility = 7.4 x10–5 M
B.   Molar solubility = 7.1 x10–5 M
Question #4
The ionic concentration of a salt that has dissolved into a saturated solution is 9.7 x10–4 M. What is the solubility of the salt? The salt has a molecular weight of 213.7 g/mol.  
A.   0.207 g/L
B.   0.217 g/L
Question #5
The solubility product constant of silver acetate (AgC2H3O2) is 2.0 x 10–3.  The solubility product constant of silver chloride (AgCl)  is 1.8 x 10–10. If 0.280 M AgC2H3O2 is placed in a solution of AgCl, what is the common-ion? 
A.   Cl
B.   Ag+1

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