The substance to be analyzed – is green colored, highly soluble in water salt. Dimethylglyoxime reaction gives pinky-red precipitate. After precipitation of cation by "sodium carbonate drawing out" method, supernatant was treated by silver nitrate solution in acid medium – appearance of white precipitate, which soluble in saturated ammonium carbonate solution, has been observed. What kind of substance is this? NiCl, MNSO4 CuCl, KBr

The substance to be analyzed – is green colored, highly soluble in water salt. Dimethylglyoxime reaction gives pinky-red precipitate. After precipitation of cation by "sodium carbonate drawing out" method, supernatant was treated by silver nitrate solution in acid medium – appearance of white precipitate, which soluble in saturated ammonium carbonate solution, has been observed. What kind of substance is this? NiCl, MNSO4 CuCl, KBr

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter37: Qualitative Analysis Of Group Ii Cations

Section: Chapter Questions

Problem 3ASA

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The substance to be analyzed – is deep-pink colored, highly soluble in water salt. Reaction with NH; 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? Co(NO3)2 CuCl2 Co(CH;COO), FeSO4
1. The substance to be analyzed – is green colored, highly soluble in water salt. Dimethylglyoxime reaction gives pinky-red precipitate. After precipitation of cation by “sodium carbonate drawing out” method, supernatant was treated by silver nitrate solution in acid medium – appearance of white precipitate, which soluble in saturated ammonium carbonate solution, has been observed. What kind of substance is this? Explain you answer, provide chemical equations .
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Simulate methyl butanoat reaction products (apple odor) by:A) H2SO4 diluted in water, hot(b) thick ammonia in waterC) sodium etocin(d) NaOH is diluted in water, hot(e) fenilmagnesium bromida overlapped in ether diethyl (f) LiAlH4, in THF, followed by a continuation in the water.
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1. The substance to be analyzed – is white, highly soluble in water salt. Reaction with NaOH gives white precipitate, soluble in reagent surplus. When interacting with dithizone – changing of color of organic layer to red is observed. Addition of iron (III) chloride leads to changing of solution`s color to reddish- brown. What kind of substance is this? Explain you answer, provide chemical equations
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Synthesis of a nickel schiff base complex: nickel(II) acetate tetrahydrate + pyrrole-2-aldehyde was reacted with a solution of ethanol/water and refluxed at 65oC. 2M sodium hydroxide was added along with a solution of 1,3-diaminopropane in water. The solid formed was dissolved in dichloromethane and heptane was added to it. The dichloromethane was evaporated off and the product was vacuum filtered. What is the reaction mechanism for this reaction and what is the name of the end product formed?
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