OThe complex ion of [Cd(en). is formed by reacting aqueous solutions of cadmium(Il), [Cd(H,O)., and ethylenediamine. The overall formation constant for the reaction, B., is 4.71 x 10. i) Write the chemical equation for the reaction. ii) Write the expression for B.
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- Ethylenediaminetetraacetate (EDTA4 ) is used as a complexing agent in chemical analysis with the structure shown in Fig. 21.7. Solutions of EDTA4 are used to treat heavy metal poisoning by removing the heavy metal in the form of a soluble complex ion. The complex ion virtually prevents the heavy metal ions from reacting with biochemical systems. The reaction of EDTA4 with Pb2+ is Pb2+(aq) + EDTA4(aq) iPbEDTA2(aq) K = 1.1 1018 Consider a solution with 0.010 mol of Pb(NO3)? added to 1.0 L of an aqueous solution buffered at pH = 13.00 and containing 0.050 M Na1EDTA. Does Pb(OH)2 precipitate from this solution? [Ksp for Pb(OH)2 = 1.2 1015.Use the formation constant of [Au(CN)2] in Appendix K to determine the equilibrium concentration of Au+(aq) in a solution that is 0.0071 M CN and 1.1 104 M [Au(CN)2]. Is it reasonable to conclude that 100% of the gold in solution is present as the [Au(CN)2] complex ion? Explain.Iodine (I2) in water will combine with iodide ions (I-1) to make tri-iodide ion (I3-1) .This tri-iodide ion fits inside the coiled starch molecule making a complex and causes a blue-black colour. Write out a general word equation showing this.
- The Zn in a 0.7556-g sample of foot powder was titrated with 21.27 mL of 0.01645 M EDTA. Calculate the percentage of Zn in this sample. A silver nitrate solution contains 14.77 g of primary-standard grade AgNO3 in 1.00 L. What volume of this solution will be needed to react with 0.2631 g of NaCl.Zinc on forms a 1:1 complex with a ligand called triethylenetetraamine. The formation constant for this complex is 1012. Calculate the [Zn2+] in a 0.01 M solution of the complex.Which complex ion is formed when undecomposed AgBr is washed with hypo solution in photography?
- A solution is prepared by mixing the two solutions together. The first solution is 150.0 mL and contains 30.78 mM Ti3+, 29.40 mM Ce3+, and 8.75 mM HCI. The second solution is 200.0 mL and contains 40.23 mM EDTA and 11.48 mM piperidine. Determine the concentration of free (non-complexed) metals when the two solutions are mixed.A sample of an Iron Oxalato complex salt weighting 0.135 grams requires 32.33 mL of 0.013 M KMnO4 to turn the solution a very light pink color at the quivalence point. Calculate the number of moles of C2O42− in the sample of the oxalate salt. Calculate the number of grams of C2O42− in the sample. Calculate the percent weight of C2O42− in the original Iron Oxalato Complex salt sample.Chemistry how to calculate the formation constant Kf for an iron:phenanthroline complex assuming 0.01% of the iron remains unreacted. the complex formed in the 1:4 iron:phenanthroline molar ratio. initially 9E-6moles iron and 0.015M phenanthroline please help. no idea how to do this.
- Term used to indicate the determination of a metal inthe presence of another metal Substance whose molecules can form several bonds toa single metal ion The product of a complexation reaction is known asthe? Added to certain canned foods to remove transition-metal ions that can catalyze the deterioration of the food 5. Inactivate metals such as Hg and Cu which react with the sulfhydryl groups thus allowing the titration of Zn at pH 6 Complex Chelate Chelating agent EDTA Masking Porphine T itration Thioglycols Ligand 6. The ion becomes more negative in charge. 7. Oxidation state is increased 8. The reactant which loses electrons 9. The ion becomes less positive in charge. 10. Involves the transfer of electrons between two species 11. Can make use of KMnO4 as an agent 12. Valence is decreased 13. AKA Half Reactions 14. In the equation 2 Fe3+ + 3 Mg(s) → 2 Fe(s) + 3 Mg2+ , Iron underwent? 15. In the equation 3 Mg(s) → 3 Mg2+(aq) + 6e–, Magnesium underwent? A. Oxidation…0.7120 g of iron ore was dissolved and the iron was reduced to Fe2+ with Jones's reagent. Fe(II) was titrated with 0.02086 M KMnO4 and consumed 39.21 mL. What is the iron content of iron ore? Report the concentration as percentage of iron (Fe%) and iron oxide (Fe2O3%).(i) Name the method used for the refining of titanium. (ii) What is the role of Zn in the extraction of silver? (iii) Reduction of metal oxide to metal becomes easier if the metal obtained is in liquid state. Why?