EBK CHEMICAL PRINCIPLES
8th Edition
ISBN: 8220101425812
Author: DECOSTE
Publisher: Cengage Learning US
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Chapter 4, Problem 35E
Interpretation Introduction
Interpretation:Among the
Concept introduction: The precipitation reactions involve the formation of a solid substance which is called precipitate. The formation of precipitate indicates that the value of ionic product for that substance is greater than the solubility product in the reaction solution. This involve ionic substances which dissociate into cations and anions. These reactions are helpful in inorganic analysis.
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A solution containing 100.0 mL of 0.155 M EDTA buffered to pH 10.00 was titrated with 100.0 mL of 0.0152 M Hg(ClO4)2 in a cell:
calomel electrode (saturated)//titration solution/Hg(l)
Given the formation constant of Hg(EDTA)2-, logKf= 21.5, and alphaY4-=0.30, find out the cell voltage E.
Hg2+(aq) + 2e- = Hg(l) E0= 0.852 V
E' (calomel electrode, saturated KCl) = 0.241 V
From the following reduction potentials
I2 (s) + 2e- = 2I- (aq) E0= 0.535 V
I2 (aq) + 2e- = 2I- (aq) E0= 0.620 V
I3- (aq) + 2e- = 3I- (aq) E0= 0.535 V
a) Calculate the equilibrium constant for I2 (aq) + I- (aq) = I3- (aq).
b) Calculate the equilibrium constant for I2 (s) + I- (aq) = I3- (aq).
c) Calculate the solubility of I2 (s) in water.
2. (3 pts) Consider the unit cell for the spinel compound,
CrFe204. How many total particles are in the unit cell?
Also, show how the number of particles and their
positions are consistent with the CrFe204
stoichiometry - this may or may not be reflected by the
particle colors in the diagram. (HINT: In the diagram,
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Chapter 4 Solutions
EBK CHEMICAL PRINCIPLES
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