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Why does the Ni(dmg)2 precipitate not form if too much ammonia solution is added?
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- If PbCl2 was not completely removed by hot water from the first group precipitate, what will become of it when the residue is treated with NH4OH?If Magnesium hydroxide is a white gelatinous precipitate, why is the confirmatory result indicated a blue precipitate?why does a white precipitate form when Na2SO4 reacts with BaCl2
- Copper chloride dihydrate (1.7g) and triphenylphosphine Ph3P (4g) are reacted together to form what complex and what would be the theoretical yield with the complex? Explain the chemistry which occurs in the experiment.What is the resulting color of an aqueous solution of NiCl2? Would a 0.5M or 0.80M have greater absorbance? Explain your answer.Cadmium is an interferant because it forms a precipitate with o-phenanthroline. What effect would the formation of a Cd-o-phenanthroline precipitate have on thedetermination of the parts per million of Fe in a sample?
- Explain the role of potassium hexacyanoferrate(II), K4[Fe(CN)6] as a component of the Benedict’s reagent for the Estimation of GlucoseChemistry Provide a relative order for the rate of reductive elimination from the following complexes and explain whyTRUE OR FALSE: Because of chelate effect, the formation reaction of the complex tris(ethylenediamine)cobalt(III) has a smaller negative ΔGrxn and a larger positive ΔSrxn compared to the formation of hexaamminecobalt(III).
- How does the doubly labeled water method depend on the existence of isotopic equilibrium between the oxygen in H2O and that in CO2?Why must the methanol be added slowly during the precipitation process in the Copper-Ammonia Complexcopper complex crystallises straightaway when synthesising but the cobalt complex required the solution to be concentrated and cooled before it is filtered to obtain product. what does this tell you about the realtive solubilities of the copper and cobalt complexes.