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Analytical Chemistry — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryAnalytical Chemistry4 Marks
Question
Sodium hydroxide solution is added in excess to the solutions of cations shown in column A. The colour of ppt. formed are shown in column B. Match the ions with there precipitates.
Column AColumn B
(a) Pb2+1. Reddish brown
(b) Fe2+2. White insoluble in excess
(c) Zn2+3. Dirty green
(d) Fe3+4. White gelatin like soluble in excess
5. White (chalky) soluble in excess
✓

Answer

(a) 5, (b) 3, (c) 4, (d) 1

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