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In case of both nitrogen and sulphur existence, Prussian blue is still the color of the end product.

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in Chemistry – Class 11 by (148k points)
In case of both nitrogen and sulphur existence, Prussian blue is still the color of the end product.

(a) True

(b) False

I had been asked this question by my school teacher while I was bunking the class.

My doubt is from Qualitative Analysis of Organic Compounds in portion Organic Chemistry – Basic Principles and Technique of Chemistry – Class 11

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The correct option is (b) False

The best explanation: In case, both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed. The color formed is blood red and not Prussian blue. This is because, in this case, there are no free cyanide ions.

Na + C + N+ S → NaSCN

Fe^3+ + SCN^– → [Fe (SCN)] ^2+ (blood red)

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