SATHEE: Some Basic Concepts Of Chemistry Question 265

Some Basic Concepts Of Chemistry Question 265

Question: The ratio of the molar amounts of $H_{2} S$ needed to precipitate the metal ions from $20 m L$ each of $1 M C d {(N O_{3})}_{2}$ and $0.5 M C u S O_{4}$ is [CPMT 1997]

Options:

A) 1 : 1

B) 2 : 1

C) 1 : 2

D) Indefinite

Show Answer

Answer:

Correct Answer: B

Solution:

$C d^{+ 2} + S^{2 -} \to C d S$

20×1= 20 $C u^{+ 2} + S^{2 -} \to C u S$

20×0.5 =10 Ratio = $2 : 1$

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Some Basic Concepts Of Chemistry Question 265

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

Options:

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Question: The ratio of the molar amounts of $H_{2} S$ needed to precipitate the metal ions from $20 m L$ each of $1 M C d {(N O_{3})}_{2}$ and $0.5 M C u S O_{4}$ is [CPMT 1997]