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Byju's Answer

Standard XII

Chemistry

Sulphuric Acid

The only cati...

Question

The only cations present in a slightly acidic solution are $F e^{3 +}, Z n^{2 +}$ and $C u^{2 +}$ . The reagent that when added in excess of this solution would identify and separate $F e^{3 +}$ in one step is:

$2 M H C l$

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$6 M N H_{3}$

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$6 M N a O H$

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$H_{2} S$ (gas)

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Solution

The correct option is B
$6 M N H_{3}$

$F e^{3 +} d u l . N H_{3} - ---- \to e x c e s s \begin{matrix} F e (O H)_{3} p p t \end{matrix} ↓$

$Z n^{2 +} d u l . N H_{3} - ---- \to e x c e s s [Z n (N H_{3})_{4}]^{2 +}$

$C u^{2 +} d u l . N H_{3} - ---- \to e x c e s s [C u (N H_{3})_{4}]^{2 +}$

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Similar questions

Q. The only cations present in a slightly acidic solutio are

F e^{3 +}, Z n^{2 +}

and

C u^{2 +}

. The reagent that when added in excess to this solution would identify and separate

F e^{3 +}

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The only cations present in a slightly acidic solution are $F e^{3 +}, Z n^{2 +} a n d C u^{2 +}$ . The reagent, added in excess to this solution, that would identify and separate $F e^{3 +}$ in one step is:

Q. The only cations present in a slightly acidic solution are

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and

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in one step is :

F e^{3 +}

ions in an aqueous solution gives deep red colouration with both sodium acetate (in excess) and ammonium thiocyanate (slightly acidic). The deep red colouration obtained with ammonium thiocyanate gets decolourised on addition of solution containing

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The only cations present in a slightly acidic solution are Fe3+,Zn2+ and Cu2+. The reagent that when added in excess of this solution would identify and separate Fe3+ in one step is:

The correct option is B 6M NH3 Fe3+dul.NH3−−−−−→excessFe(OH)3ppt↓ Zn2+dul.NH3−−−−−→excess[Zn(NH3)4]2+ Cu2+dul.NH3−−−−−→excess[Cu(NH3)4]2+

The only cations present in a slightly acidic solution are $F e^{3 +}, Z n^{2 +}$ and $C u^{2 +}$ . The reagent that when added in excess of this solution would identify and separate $F e^{3 +}$ in one step is:

The correct option is B
$6 M N H_{3}$

$F e^{3 +} d u l . N H_{3} - ---- \to e x c e s s \begin{matrix} F e (O H)_{3} p p t \end{matrix} ↓$

$Z n^{2 +} d u l . N H_{3} - ---- \to e x c e s s [Z n (N H_{3})_{4}]^{2 +}$

$C u^{2 +} d u l . N H_{3} - ---- \to e x c e s s [C u (N H_{3})_{4}]^{2 +}$