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Na+-ions colour the flame of the burner in:

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Which cations are in the solution if the gas with a strong smell is liberated when heating with alkali?

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When carrying out the reaction of sodium-ions with potassium hexahydroxostibiate (V) in neutral medium the precipitate is formed. Specify the colour of the precipitate:

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K+-ions colour the flame of the burner in:

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Choose the reagent for deleting NH4+-ions before the К+-cations detection:

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The dry residue obtained after evaporation of the solution to be analysed colours the colourless flame of the burner in a yellow colour, but when examining through a blue glass in a violet one. Which cations are present in the dry residue?

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Choose the reagent for the K+-cations detection:

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Титрант методу комплексонометрії – розчин трилону Б – утворює з катіонами металів незалежно від їх валентності комплексні сполуки у молярному співвідношенні:

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Комбінація яких методів об’ємного аналізу дозволяє визначити вміст кожної речовини у суміші FeSO4 і H2SO4?

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Методом комплексонометрії можна визначити кількісний вміст MgSO4 в присутності:

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