Why does using bathocuproine work to detect the amount of copper in a sample ? Specifically with regards to the Cu(I)-bathocuproine interaction
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Why does using bathocuproine work to detect the amount of copper in a sample ? Specifically with regards to the Cu(I)-bathocuproine interaction
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- Why is the froth flotation method selected for the concentration of sulphide ores?Explain why ionic attractions are weaker in media with high dielectric constants, e. g.,water and aqueous buffers.(i) What type of non-stoichiometric point defect is responsible for the pink colour of LiCl?(ii) What type of stoichiometric defect is shown by NaCl?
- Although Lead and Silver were not directly tested, which metal Pb or Ag is more active? explainCan electrogravimetry give total copper concentration and determine the concentration of specific species of either Cu(II) or Cu (I)? Why? And does it require a standard calibration curve? If not, how can the amount of analyte be determined?What about Polarography?If blast furnace slag is activated by NaOH, resulting in the formation of alkali-activated slag (AAS) – what kind of phases form in this system over time? How does the precipitated phase assemblage change with a change in the composition of the precursor slag? What differences exist in these formed phases in AAS systems when compared to blended systems such as OPC-Slag mixtures?
- Elaborate the reason why EDTA is used in many complexometric titrations. How will you be able to improve its selectivity when it comes to analyzing specific metals?The standard addition technique was used for the voltammetric analysis of a Cd2+ sample. From the data listed in the table below, calculate the concentration of the Cd2+ in the sample.The iron content of a large lump of ore is determined by taking a single small sample, dissolving it in acid, and titrating with ceric sulphate after reduction of Fe (III) to Fe (II). What are the possible source of random and systematic errors?
- What is the principle used in colorimetric determination of iron in water?What is the ligand to metal ratio for SCN-1 and Fe+3?(a) Write the principle of electrolytic refining.(b) Why does copper obtained in the extraction from copper pyrites have a blistered appearance?(c) What is the role of depressants in the froth floatation process?