In a solution containing Hg^{2+}, Cd^{2+}, Sr | vedclass

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(A) In qualitative analysis,$H_2S$ in the presence of $0.3 \, M \, HCl$ is used to precipitate Group-$II$ cations.Group-$II$ cations include $Hg^{2+},

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$Cd^{2+}, Cu^{2+},$ and $Hg^{2+}$

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(A) In qualitative analysis,$H_2S$ in the presence of $0.3 \, M \, HCl$ is used to precipitate Group-$II$ cations.Group-$II$ cations include $Hg^{2+}, Pb^{2+}, Bi^{3+}, Cu^{2+}, Cd^{2+}, As^{3+}, Sb^{3+},$ and $Sn^{4+}$.Among the given ions $(Hg^{2+}, Cd^{2+}, Sr^{2+}, Fe^{2+}, Cu^{2+})$,the ions $Hg^{2+}, Cd^{2+},$ and $Cu^{2+}$ belong to Group-$II$.$Sr^{2+}$ belongs to Group-$V$ and $Fe^{2+}$ belongs to Group-$III$,which do not precipitate under these acidic conditions.Therefore,$Hg^{2+}, Cd^{2+},$ and $Cu^{2+}$ will precipitate as their respective sulfides.

List-$I$ (Ion)	List-$II$ (Group Number in Cation Analysis)
$A. Co^{2+}$	$I. Group-I$
$B. Mg^{2+}$	$II. Group-III$
$C. Pb^{2+}$	$III. Group-IV$
$D. Al^{3+}$	$IV. Group-VI$

In a solution containing $Hg^{2+}, Cd^{2+}, Sr^{2+}, Fe^{2+},$ and $Cu^{2+}$ ions in $0.3 \, M \, HCl$,which ions will precipitate upon the addition of $H_2S$?

Similar Questions

Which of the following ions form precipitates when $H_2S$ gas is passed through an acidic mixture containing $Cu^{2+}, Ni^{2+},$ and $Zn^{2+}$?

Match List-$I$ with List-$II$:

List-$I$ (Ion) List-$II$ (Group Number in Cation Analysis)

$A. Co^{2+}$ $I. Group-I$

$B. Mg^{2+}$ $II. Group-III$

$C. Pb^{2+}$ $III. Group-IV$

$D. Al^{3+}$ $IV. Group-VI$

Choose the correct answer from the options given below:

$A$ colourless crystalline salt $X$ is soluble in dilute $HCl$. On adding $NaOH$ solution,it gives a white precipitate which is insoluble in excess of $NaOH$. $X$ is

How do we differentiate between $Fe^{3+}$ and $Cr^{3+}$ in group $III$?

What color does lead acetate give with $H_2S$?

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