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11 grade chemistry others

A blood red color is obtained when ferric chloride solution reacts with ________.
(a)- KCN
(b)- KSCN
(c)- K₄[Fe(CN)₆]
(d)- K₃[Fe(CN)₆]

Aniket Singh

10 Months agoGrade

1 Answer

Askiitians Tutor Team

Approved Tutor Answer10 Months ago

A blood red color is obtained when ferric chloride solution reacts with KSCN (option b). This reaction produces ferric thiocyanate, which is responsible for the characteristic red color.

Reaction Details

When ferric chloride (FeCl₃) interacts with potassium thiocyanate (KSCN), the following occurs:

Ferric ions (Fe³⁺) react with thiocyanate ions (SCN⁻).
This forms the complex ferric thiocyanate (Fe(SCN)³⁺).

Visual Result

The resulting solution exhibits a deep red hue, which is a key indicator of the presence of ferric ions in the solution.

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