The intensity of red colour of ferric thiocyanate reduces on an addition of concentrated solution of

sulphuric acid

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ferric nitrate

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potassium thiocyanate

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potassium nitrate

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Solution

The correct option is D
potassium nitrate

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F e^{3 +}

ions in an aq. 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

F^{-}

ions.
The deep Red colouration is due to the formation of :

F e^{3 +}

ions in an aq. 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

F^{-}

ions. Which one of the following statement is false with respect to deep red colouration produced with

N H_{4} S C N

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

F^{-}

ions. Excess of

C H_{3} C O O N a

is added in the reaction with

F e^{3 +}

because :

The colour of ferric thiocyanate is

During the formation of ferric thiocyanate and potassium nitrate from ferric nitrate and potassium thiocyanate, the red color is due to the formation of

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The intensity of red colour of ferric thiocyanate reduces on an addition of concentrated solution of

The correct option is D potassium nitrate

The correct option is D
potassium nitrate