- The products of heating aqueous solution of silver cyanate and ammonium Chloride are . (a) Silver chloride and ammonium cyanate (b) Ammonium cyanate and urea (C) Silver chloride and urea (d) ammonium cyanide and urea
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- xpress numerical result with an accuracy of: Х,Х 1. The substance to be analyzed – is deep-pink colored, highly soluble in water salt. Reaction with NH3 gives blue-colored precipitate, which can be dissolved in NH3 surplus accompanied by dirty-yellow colored solution formation. After precipitation of cation by “sodium carbonate drawing out” method, supernatant was independently treated by silver nitrate solution and barium chloride solution (in acid medium in both cases) – any precipitation hasn`t been observed. Addition of antipyrin in acid medium changes color to red. What kind of substance is this? Explain you answer, provide chemical equationsSudies have revealed extremely high deposits of heavy metals and paryiculate matterin rivers , making them unwholesome for drinking. With your on analytical separation and analyses, outline a suitable analytical separation protocol that can be employed to recover polluted river bodies and make wholesome for drinking. Explain in details.Using the term u of KSP experimental procedure the 6 p.m. As you add 5 ml of .004M AgNo to 5ml of .0025M K2CrO4. Is either of these reagents in excess? If so which one?
- Suppose you have prepared s compound which is reported in the literature to have a pale blue color. When dissolving the substance in hot solvent prior recrystallization, the resulting solution is blue. Should you use decolorizing charcoal before allowing the hot solution to cool? Explain your answer.It is required to know the concentration of an aqueous solution of H2SO4 that appeared in the laboratoryChemistry III and it's unlabeled. To this end, a student of analytical chemistry carried out the followingProcedure: He took 5.00 mL of a fresh and standardized solution of 0.525M NaOH and brought them to a250.0 mL balloon to be completed with distilled water. Subsequently, he poured 15.00 mL of the solutionH2SO4 of unknown concentration in an Erlenmeyer flask and added 2 drops of phenolphthalein.Using a burette filled with the last NaOH solution, he noticed that when adding 39.40 mL of the hydroxidethe Erlenmeyer solution reached a faint but permanent pink. With the above dataDetermine the concentration and pH of the H2SO4 solution.In this activity, you will develop an experimental procedure to solve a problem. Consider the followingscenario:You are the manager of a chemical stockroom, and find a bottle containing approximately one liter of aclear and colorless solution of unknown identity and concentration. Your only clue to its identity is thatit was found between bottles of silver fluoride and sodium fluoride, so it is likely an aqueous solution ofone of those two compounds. You will need to develop a procedure to determine the following:a) The identity of the unknown solutionb) The concentration of the unknown solutionWrite out a precise procedure, which includes all glassware, reagents, and steps. You will also need towrite the calculations that you would need to determine the concentration of the solution. Assume thatyou have access to any reagent you might need
- How to prepare 250cm3 of a solution of carbonate with concentration 0.100 mol dm-3FeCl3 and MgCl2 solution was prepared by dissolving FeCl3 (AR) and MgCl2 (AR) in distilled water. Secondly, under rapid stirring, NaHCO3 powder was slowly added to the above solution to the desired basicity (B = 1) which had been proved to be the optimal B for turbidity removal. Thirdly, Na2HPO4 (AR) was added to the PFMC solution as a stabilizer ([Na2HPO4]/([Fe] + [Mg]) = 0.08). i. The the chemical equation of the Synthesis. ii How much weight need to put NaHCO3 above solution the desired basicity (B=1) iii. How much weight need to put Na2HPO4 on PFMC solution refering ([Na2HPO4]/([Fe] + [Mg]) = 0.08).Find how many % of I2 in 1000 mL H2O will still be in its aqueous phase if it was extracted with CHCl3 for a single time. Note: Suppose that KD is 160.
- From the structure of EDTA (and knowing that it is ethylene diamine tetraacetic acid) explain why the EDTA ismuch more soluble after the addition of the basic ammonia buffer. Is there a chemical reaction that isresponsible for this solubility change? If so explain what the reaction is and how it would be responsiblefor the increased solubility of EDTA in water.Ethylenediamine tetraacetate or EDTA is a very common reagent in Analytical Chemistry. As what wasmentioned in the module, EDTA titrations are the easiest and are still the most currently used quantitative methods to analyze substances including pharmaceuticals. With that being said, EDTA, as a reagent, has its medical applications. In not more than 5 sentences, what is the significance of EDTA to your profession as future Medical Technologists? Aside from EDTA, enumerate (5) important chelating agents in the field of Medical Technologywhat is the solubility of phenazopyridine hydrochloride in the basic and acidic medium? with illustration, and chemical structure and its melting point .