The ratio of the molar amounts of H₂S needed to precipitate the metal ions from 20mL each of 1 M Cd(NO₃)₂ and 0.5M CuSO₄ is [CPMT 1997]

Question: The ratio of the molar amounts of Hneeded to precipitate the metal ions from 20mL each of 1 M Cd(NO₃) and 0.5M CuSO₄ is [CPMT 1997]

(a) 1 : 1

(b) 2 : 1

(c) 1 : 2

(d) Indefinite


Correct Answer: (b) 2 : 1


Question: The ratio of the molar amounts of H₂S needed to precipitate the metal ions from 20mL each of 1 M Cd(NO₃)₂ and 0.5M CuSO₄ is [CPMT 1997] (a) 1 : 1 (b) 2 : 1 (c) 1 : 2 (d) Indefinite


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