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2. After the NH3 molecules acted as Bronsted bases in the reaction with aqueous HCl they...
3. Copy the structure of EDTA" from your textbook and circle all six atoms that act...
3. Copy the structure of EDTA" from your textbook and circle all six atoms that act as Lewis bases. Why does EDTA* cease to function as a chelating ligand if acid is added to the solution? Preparation and Analysis of a Complex Ion Compound Introduction: In aqueous solutions the Ni** cation forms a complex ion with 6 H2O ligands. The formula of this complex ion is: Ni(H20) 2* When this complex ion is mixed with aqueous NH3 a reaction occurs...
LAB DESCRIPTION: In aqueous solutions the Ni2+ cation forms a complex ion with 6 H2O ligands....
LAB DESCRIPTION: In aqueous solutions the Ni2+ cation forms a complex ion with 6 H2O ligands. The formula of this complex ion is: Ni(H2O)62+. When this complex ion is mixed with aqueous NH3 a reaction occurs where some of the H2O ligands are displaced with NH3 ligands. But how many of the H2O are displaced by NH3? In this experiment you will mix nickel(II) sulfate and aqueous ammonia to synthesize a compound containing a complex ion whose formula is Ni(H2O)6-x(NH3)x2+,...
2. (3 points) In lab, you will form complexes using different ligands. Use your lab manual to identify and draw the str...
2. (3 points) In lab, you will form complexes using different ligands. Use your lab manual to identify and draw the structural formula (lewis formula) for the following: a. A charged monodentate ligand (answer cannot be a halide ion) b. A polydentate ligand c. The CO ligand, not used in the laboratory. Is it likely CO can form a coordinate covalent bond from more than one atom? Explain. NC CN Ni Geometry of Coordination Compounds A compounds geometry (i.e., how...
What is the coordination number for each of the following complexes or compounds? [Co(NH3)4Cl2]+ [Ca(EDTA)]2− [Pt(NH3)4]2+...
What is the coordination number for each of the following
complexes or compounds?
[Co(NH3)4Cl2]+
[Ca(EDTA)]2−
[Pt(NH3)4]2+
Na[Ag(CN)2]
Enter the coordination numbers, in the order that the complexes
are listed, as four integers separated by commas (e.g.,
1,2,3,4).
What is the charge on each of the following complex ions?
hexaaquairon(II), [Fe(H2O)6]?
tris(carbonato)aluminate(III), [Al(CO3)3]?
amminepentachloroplatinate(IV), [Pt(NH3)Cl5]?
Express the charges numerically, in the order that the complexes
are listed, separated by commas. For a nonzero charge, be sure to
include the sign (e.g.,...
The first two pages are the background of the lab. I would appreciate any help with...
The first two pages are the background of the lab. I would
appreciate any help with the pre-lab questions, even if you cannot
answer them all, so I could continue to the post-lab on my own.
Experiment Thermodynamics: Entropy vs. Enthalpy OH, Background The formation of a Lewis Acid-Base complex occurs when you have a lone pair of electrons being donated to an electropositive ion or atom. Common examples are the Lewis Acid-Base complexes that most metal ions form in...
The first two pages are a background of the lab and there is a page with...
The first two pages are a background of the lab and there is a
page with the results. I would appreciate any help with this. If
needed I have the pre-lab questions as well. I added in the pre-lab
questions I will get them answered and updated again if that is
what is needed.
Report Sheet Name Pre-Lab Questions [Ni(H0) ] + + 6 NHỮ[Ni(NH] + + H2O 1. Given the spontaneous chemical reaction shown above and the fact that...
3. Suppose after adding HCl to ppt 16, you do not have any black solid. What,...
3. Suppose after adding HCl to ppt 16, you do not have any black solid. What, if anything, should you do to test for Co2 and Ni*? Qual Scheme: Group III: Co?(pink), N1" (green), Fet+ (yellow), Cr" (blue-grey), Mn(pink), AP (colorless), Zn? (colorless). Unknown B Solution: Use 10 dps of unknown sample and 10 dps of H20 and go to Procedure for Group III. Procedure for Group II: Add 2 dps NHCl soln, add 6M NHOH until just basic to...
2. If the reaction between iron(III) ion and thiocyanate ion yielded an equilibrium concentration of 0.30...
2. If the reaction between iron(III) ion and thiocyanate ion yielded an equilibrium concentration of 0.30 M for each of these ions, what is the equilibrium concentration of the red iron(III)-thiocyanate complex? (Hint: The equilibrium constant for the reaction is in the Background section.) Show your work 3. In the reaction below, NH3(g) + H2O(1) - NH; +H30+ the equilibrium constant is 10-34. Is this reaction likely to take place? Explain your answer. iron(III) and thiocyanate ions, the equilibrium expression...
Titration: Acids and Bases 2. How can you determine which acid is diprotic? 3. using the...
Titration: Acids and Bases
2. How can you determine which acid is diprotic?
3. using the answers to questions one and two, which acid is
diprotic?
4. Which base has more hydroxide ions per molecule?
Acid Volume Base Base Initial Volume (mL) Base Final Volume (mL) Volume of Base Used (mL) Acid: Base Ratio Acid 1 20 mL Base 1 50 mL 34.5 15.5 4:3 Acid 2 20 mL Base 1 Acid 1 20 mL Base 2 Acid 2 20...
Experiment 8 Double Replacement Reactions Background: Some reactions have the net effect of causing the cation...
Experiment 8 Double Replacement Reactions Background: Some reactions have the net effect of causing the cation of each reactant to trade places, forming a compound with the other anion. These reactions are known as double replacement reactions. In the example below (unbalanced equation), the barium and sodium cations switch places so that barium forms a product with sulfate while sodium forms a product with chloride. Note that the formula of each product is determined by the charges of the ions,...
3. Copy the structure of EDTA" from your textbook and circle all six atoms that act as Lewis bases. Why does EDTA* cease to function as a chelating ligand if acid is added to the solution? Preparation and Analysis of a Complex Ion Compound Introduction: In aqueous solutions the Ni** cation forms a complex ion with 6 H2O ligands. The formula of this complex ion is: Ni(H20) 2* When this complex ion is mixed with aqueous NH3 a reaction occurs...
2. (3 points) In lab, you will form complexes using different ligands. Use your lab manual to identify and draw the structural formula (lewis formula) for the following: a. A charged monodentate ligand (answer cannot be a halide ion) b. A polydentate ligand c. The CO ligand, not used in the laboratory. Is it likely CO can form a coordinate covalent bond from more than one atom? Explain. NC CN Ni Geometry of Coordination Compounds A compounds geometry (i.e., how...
What is the coordination number for each of the following
complexes or compounds?
[Co(NH3)4Cl2]+
[Ca(EDTA)]2−
[Pt(NH3)4]2+
Na[Ag(CN)2]
Enter the coordination numbers, in the order that the complexes
are listed, as four integers separated by commas (e.g.,
1,2,3,4).
What is the charge on each of the following complex ions?
hexaaquairon(II), [Fe(H2O)6]?
tris(carbonato)aluminate(III), [Al(CO3)3]?
amminepentachloroplatinate(IV), [Pt(NH3)Cl5]?
Express the charges numerically, in the order that the complexes
are listed, separated by commas. For a nonzero charge, be sure to
include the sign (e.g.,...
The first two pages are the background of the lab. I would
appreciate any help with the pre-lab questions, even if you cannot
answer them all, so I could continue to the post-lab on my own.
Experiment Thermodynamics: Entropy vs. Enthalpy OH, Background The formation of a Lewis Acid-Base complex occurs when you have a lone pair of electrons being donated to an electropositive ion or atom. Common examples are the Lewis Acid-Base complexes that most metal ions form in...
The first two pages are a background of the lab and there is a
page with the results. I would appreciate any help with this. If
needed I have the pre-lab questions as well. I added in the pre-lab
questions I will get them answered and updated again if that is
what is needed.
Report Sheet Name Pre-Lab Questions [Ni(H0) ] + + 6 NHỮ[Ni(NH] + + H2O 1. Given the spontaneous chemical reaction shown above and the fact that...
3. Suppose after adding HCl to ppt 16, you do not have any black solid. What, if anything, should you do to test for Co2 and Ni*? Qual Scheme: Group III: Co?(pink), N1" (green), Fet+ (yellow), Cr" (blue-grey), Mn(pink), AP (colorless), Zn? (colorless). Unknown B Solution: Use 10 dps of unknown sample and 10 dps of H20 and go to Procedure for Group III. Procedure for Group II: Add 2 dps NHCl soln, add 6M NHOH until just basic to...
2. If the reaction between iron(III) ion and thiocyanate ion yielded an equilibrium concentration of 0.30 M for each of these ions, what is the equilibrium concentration of the red iron(III)-thiocyanate complex? (Hint: The equilibrium constant for the reaction is in the Background section.) Show your work 3. In the reaction below, NH3(g) + H2O(1) - NH; +H30+ the equilibrium constant is 10-34. Is this reaction likely to take place? Explain your answer. iron(III) and thiocyanate ions, the equilibrium expression...
Titration: Acids and Bases
2. How can you determine which acid is diprotic?
3. using the answers to questions one and two, which acid is
diprotic?
4. Which base has more hydroxide ions per molecule?
Acid Volume Base Base Initial Volume (mL) Base Final Volume (mL) Volume of Base Used (mL) Acid: Base Ratio Acid 1 20 mL Base 1 50 mL 34.5 15.5 4:3 Acid 2 20 mL Base 1 Acid 1 20 mL Base 2 Acid 2 20...
Experiment 8 Double Replacement Reactions Background: Some reactions have the net effect of causing the cation of each reactant to trade places, forming a compound with the other anion. These reactions are known as double replacement reactions. In the example below (unbalanced equation), the barium and sodium cations switch places so that barium forms a product with sulfate while sodium forms a product with chloride. Note that the formula of each product is determined by the charges of the ions,...
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