Homework Answers
Zinc hydroxide is consider as insoluble in water is true sentence. Reason is electrostatic force of attraction between Zn(OH)2 is more than water molecules. Ksp value for this is = 2.9*10^-16
Hence Zn(OH)2 is slightly soluble in water.
Dissociation of it as follows
Zn(OH)2(s) <-----> Zn2+(aq) +2(OH)-(aq)
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Question 3 3 pts Zinc hydroxide, Zn(OH)2, is considered insoluble in water. Is it true that...
A) Consider the insoluble compound zinc hydroxide, Zn(OH)2. The zinc ion also forms a complex with...
A) Consider the insoluble compound zinc hydroxide, Zn(OH)2. The zinc ion also forms a complex with ammonia. Write a balanced net ionic equation to show why the solubility of Zn(OH)2(s) increases in the presence of ammonia and calculate the equilibrium constant for this reaction. For Zn(NH3)42+, Kf = 2.9×109. Specify states such as (aq) or (s) and provide K. K = ______ B) Consider the insoluble compound nickel(II) hydroxide, Ni(OH)2. The nickel ion also forms a complex with cyanide ions....
6 6. Zinc hydroxide, Zn(OH)2. is practically insoluble in pure water. (Kap 3.0 x 10-16) a) Determine the pH of a saturated aqueous solution of Zn(O1H)2. (You should assume that all hydroxide ions...
6 6. Zinc hydroxide, Zn(OH)2. is practically insoluble in pure water. (Kap 3.0 x 10-16) a) Determine the pH of a saturated aqueous solution of Zn(O1H)2. (You should assume that all hydroxide ions in the solution come from the Zn(OH)2: you can ignore the autoionization of water.) (4 pts) b) Zn(OH)2 is less soluble in even very dilute solutions of Zn(NOs)2 due to the common ion effect. Determine the molar solubility of zine hydroxide in a 1.0 x 10-4 M...
5) Zinc forms a precipitate with the hydroxide ion (Zn(OH)2) as well as several complex ions....
5) Zinc forms a precipitate with the hydroxide ion (Zn(OH)2) as well as several complex ions. Given the equilibria below, calculate the concentration of each zinc species in a solution saturated with Zn(OH)2 and [OH') fixed at 3.2 x 107M Zn(OH)2(8) Ksp = 3 x 10-16 Zn(OH)* K= 1 x 104 Zn(OH)2(aq) K = 2 x 1010 Zn(OH)3 K = 8 x 1013 Zn(OH)42 K= 3 x 1015
2/3 correct answers are required for credit Consider the insoluble compound zinc sulfide , ZnS. The...
2/3 correct answers are required for credit
Consider the insoluble compound zinc sulfide , ZnS. The zinc ion also forms a complex with hydroxide ions. Write a balanced net ionic equation to show why the solubility of ZnS (s) increases in the presence of hydroxide ions and calculate the equilibrium constant for this reaction. For Zn(OH)42. , K,-29x1015 . Use the pull-down boxes to specify states such as (aq) or (s). 1 1
[References Approximately 0.15 g zinc(II) hydroxide, Zn(OH), (8), dissolves per liter of water at 20°C. Calculate...
[References Approximately 0.15 g zinc(II) hydroxide, Zn(OH), (8), dissolves per liter of water at 20°C. Calculate Ky for Zn(OH),(3) at this temperature. K- Submit Answer Try Another Version 6 item attempts remaining
w Question 51 3 pts **WRITTEN WORK** Draw the structures for compound A-C in the following...
w Question 51 3 pts **WRITTEN WORK** Draw the structures for compound A-C in the following sequence of reactions. OH Come H,PO A СРВА A B NON МОН HTML Editor В І у А. I EI x x, E STT 12pt Paragraph O words Question 52 3 pts Question 52 3 pts **WRITTEN WORK** Draw the structures for compound D-F in the following sequence of reactions. OH (CH):COK D E 1. BH,THF. PBrs 2. H2O2, HOF HTML Editor BIVA -...
15 in whichever order you prefer. Question 3 4 pts What must be true for a...
15 in whichever order you prefer. Question 3 4 pts What must be true for a perfectly competitive market to be in long-run equilibrium? Very briefly (1-2 sentences) explain why. HTML Editora BIVA - A - IE 3 1 1 x *, E 1 12pt Paragraph
Question 17 1 pts Given these half cell reactions: Zn+2 (aq) + 2e → Zn (s)...
Question 17 1 pts Given these half cell reactions: Zn+2 (aq) + 2e → Zn (s) E = -0.76 V Ag+ (aq) + e Ag (s) E° = 0.80V Write the Cell Diagram (line notation) representing the anode and cathode half reactions. Note: Use forward slash as line separators, HTML Editor BIVA -A- IE * 3 1 1 x'x, EE D D N V VD 1 2pt - Paragraph - ®
Given the Ksp of Zn(OH)2 is 3.0x10-1, determine the Zn2 ion concentration when the pH of...
Given the Ksp of Zn(OH)2 is 3.0x10-1, determine the Zn2 ion concentration when the pH of the solution is buffered to pH=12.00 (so that the hydroxide ion concentration is 0.010 M). 1. Zn(OH)2(s) A. [Zn2] 3.0x10-12 M B. [Zn2 3.7x10- M C. [Zn23.0x10-10 M D. [Zn2] 9.1x10-3 M E. [Zn2] 1.5x10-13 M Zn2 (aq) + 20H (aq) Ksp 3.0x10-16 2. When silver carbonate, Ag,COs, is mixed with water, it dissolves to some extent to form a saturated solution where the...
Question 20 3 pts TRUE FALSE CORRECT: If the statement is true, simply answer TRUE. If...
Question 20 3 pts TRUE FALSE CORRECT: If the statement is true, simply answer TRUE. If the statement is false, answer FALSE and CORRECT the statement. Pronation at the subtalar joint in the hindfoot during running is dominantly described in recent biomechanical literature to be pathomechanical (undesired). and linked to lower leg, knee, hip and even back problems. Pronation should be minimized. HTML Editor BIVA-A- IEEXXE . C V VO 12pt - Pa O words D Question 21 3 pts...
6 6. Zinc hydroxide, Zn(OH)2. is practically insoluble in pure water. (Kap 3.0 x 10-16) a) Determine the pH of a saturated aqueous solution of Zn(O1H)2. (You should assume that all hydroxide ions in the solution come from the Zn(OH)2: you can ignore the autoionization of water.) (4 pts) b) Zn(OH)2 is less soluble in even very dilute solutions of Zn(NOs)2 due to the common ion effect. Determine the molar solubility of zine hydroxide in a 1.0 x 10-4 M...
5) Zinc forms a precipitate with the hydroxide ion (Zn(OH)2) as well as several complex ions. Given the equilibria below, calculate the concentration of each zinc species in a solution saturated with Zn(OH)2 and [OH') fixed at 3.2 x 107M Zn(OH)2(8) Ksp = 3 x 10-16 Zn(OH)* K= 1 x 104 Zn(OH)2(aq) K = 2 x 1010 Zn(OH)3 K = 8 x 1013 Zn(OH)42 K= 3 x 1015
2/3 correct answers are required for credit
Consider the insoluble compound zinc sulfide , ZnS. The zinc ion also forms a complex with hydroxide ions. Write a balanced net ionic equation to show why the solubility of ZnS (s) increases in the presence of hydroxide ions and calculate the equilibrium constant for this reaction. For Zn(OH)42. , K,-29x1015 . Use the pull-down boxes to specify states such as (aq) or (s). 1 1
[References Approximately 0.15 g zinc(II) hydroxide, Zn(OH), (8), dissolves per liter of water at 20°C. Calculate Ky for Zn(OH),(3) at this temperature. K- Submit Answer Try Another Version 6 item attempts remaining
w Question 51 3 pts **WRITTEN WORK** Draw the structures for compound A-C in the following sequence of reactions. OH Come H,PO A СРВА A B NON МОН HTML Editor В І у А. I EI x x, E STT 12pt Paragraph O words Question 52 3 pts Question 52 3 pts **WRITTEN WORK** Draw the structures for compound D-F in the following sequence of reactions. OH (CH):COK D E 1. BH,THF. PBrs 2. H2O2, HOF HTML Editor BIVA -...
15 in whichever order you prefer. Question 3 4 pts What must be true for a perfectly competitive market to be in long-run equilibrium? Very briefly (1-2 sentences) explain why. HTML Editora BIVA - A - IE 3 1 1 x *, E 1 12pt Paragraph
Question 17 1 pts Given these half cell reactions: Zn+2 (aq) + 2e → Zn (s) E = -0.76 V Ag+ (aq) + e Ag (s) E° = 0.80V Write the Cell Diagram (line notation) representing the anode and cathode half reactions. Note: Use forward slash as line separators, HTML Editor BIVA -A- IE * 3 1 1 x'x, EE D D N V VD 1 2pt - Paragraph - ®
Given the Ksp of Zn(OH)2 is 3.0x10-1, determine the Zn2 ion concentration when the pH of the solution is buffered to pH=12.00 (so that the hydroxide ion concentration is 0.010 M). 1. Zn(OH)2(s) A. [Zn2] 3.0x10-12 M B. [Zn2 3.7x10- M C. [Zn23.0x10-10 M D. [Zn2] 9.1x10-3 M E. [Zn2] 1.5x10-13 M Zn2 (aq) + 20H (aq) Ksp 3.0x10-16 2. When silver carbonate, Ag,COs, is mixed with water, it dissolves to some extent to form a saturated solution where the...
Question 20 3 pts TRUE FALSE CORRECT: If the statement is true, simply answer TRUE. If the statement is false, answer FALSE and CORRECT the statement. Pronation at the subtalar joint in the hindfoot during running is dominantly described in recent biomechanical literature to be pathomechanical (undesired). and linked to lower leg, knee, hip and even back problems. Pronation should be minimized. HTML Editor BIVA-A- IEEXXE . C V VO 12pt - Pa O words D Question 21 3 pts...
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