Interpretation: The reason behind the usage of dry apparatus and solvents when the borane-THF complex solution needs to be used should be given.
Concept introduction:Hydroboration-oxidation involves a sequence of two reactions. The hydroboration stage involves the treatment of alkene with diborane that generates alkyl borane. In second stage hydrogen peroxide in alkaline medium is used to oxidize the alkyl borane produced in step 1 that leads to the synthesis of alcohols from
Anti-Markovnikov’s Rule serves as the basis ofhydroboration. It states that the negative part of reagent must go to the carbon that has fewer alkyl substituents or more
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- b. EDTA cannot be used as a primary standard always. When can EDTA be used as a primarystandard ? Give reason why EDTA is used in complexometric titrations.arrow_forwardTrue or false: Iron in the +2 oxidation state could create octahedral complexes True or False: Salt can be weighed by placing it directly on the pan of the balancearrow_forwardExplain why calmagite and eriochrome black T would not work well as indicators for EDTA titrations in acidic solution. Would the same apply to xylenol orange and pyrocatechol violet?arrow_forward
- What is the main limitation of colorimetric measurement technique while identifying the concentration of solutions?arrow_forwardwhats the purpose for the Colorimetric Determination of Iron experiment?arrow_forward1. Why is it necessary to use a buret for measuring standard AgNO3 solution in volhard method? 2. What is the effect of discolored AgNO3 on the concentration of KSCN? 3. Why is necessary to use boiled 6N HNO3 in volhard? 4. why is the titration done with vigorous swirling?arrow_forward
- a) What is the equilibrium that influences the colour change of the Eriochrome Black T indicator? b) Consider how ETDA coordinates to metal ions and then consider this ligand below. Could this ligand be substituted for EDTA in a similar experiment? Why? Identify all possible donor atoms in the structure c) What is the function of the buffer solution for this experiment? Consider the form of EDTA (H4Y) compared to the form in the reaction equation below: The reaction of ETDA with metal cations, e.g. Mn+, may be written as: Mn+ + H2Y2– = MYn–4 + 2 H+arrow_forwardA 25.00 mL aliquot of a solution containing Cu2+ and Fe3+ was titrated with 17.08 mL of 0.05095 M EDTA. A second 25.00 mL aliquot of the Cu/Fe mixture was treated with NaF to form a stable iron-fluoride complex. This mixture was then titrated with EDTA and the endpoint volume was found to be 5.47 mL. Calculate the amounts of Cu2+ and Fe3+ in mg/L. Molar mass (g/mol): Fe = 55.85 and Cu = 63.55arrow_forwardCrystallization may be inducted by scratching the vessel beneath the surface of the solution with a glass rod. How does scratching the inside of the vessel with a glass rod induce crystallation?arrow_forward
- Why does rapid mixing of the reducing agent give more monodispersed particles?arrow_forward1. Why is it necessary to use a buret for measuring standard AgNO3 solution in volhard method? 2. What is the effect of discolored AgNO3 on the concentration of KSCN? 3. Why is necessary to use boiled 6N HNO3 in volhard? 4. why is the titration done with vigorous swirling? 5. A solution of AgNO3 is added to a solution containing 0.100 Cl- and 0.100M CrO4-, at what Ag+ concentration will Ag2CrO4 begin to precipitate? and what will be the concentration of the less soluble compound when the more soluble one begins to precipitate?arrow_forwardDiscuss the binding mode and geometry of the imido and cyclopentadienyl ligands in the tungsten complex below.arrow_forward